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Test DNS, SSL/TLS, HTTP and HTML

Test results for github.com

Scanned on: Thu Oct 11 13:36:50 2018 GMT. Tested in 366 seconds

DNS Report

DNSSEC                 not offered
Zone transfer (AXFR)   not allowed (OK)
CAA Record             not offered
SPF Record             offered (OK)
DMARC Record           offered (OK)
MTA-STS                not offered
TLSRPT Record          not offered

Raw DNS Records

Name TTL Type Data
github.com 3600 SOA ns1.p16.dynect.net hostmaster @ github.com 1538847252 3600 600 604800 60
github.com 900 NS ns-1283.awsdns-32.org
github.com 900 NS ns-1707.awsdns-21.co.uk
github.com 900 NS ns-421.awsdns-52.com
github.com 900 NS ns-520.awsdns-01.net
github.com 900 NS ns1.p16.dynect.net, IPv4: 208.78.70.16, IPv6: 2001:500:90:1:0:0:0:16
github.com 900 NS ns2.p16.dynect.net, IPv4: 204.13.250.16
github.com 900 NS ns3.p16.dynect.net, IPv4: 208.78.71.16, IPv6: 2001:500:94:1:0:0:0:16
github.com 900 NS ns4.p16.dynect.net, IPv4: 204.13.251.16
github.com 56 A 192.30.253.112
github.com 56 A 192.30.253.113
github.com 3600 MX 1 ASPMX.L.GOOGLE.COM
github.com 3600 MX 5 ALT2.ASPMX.L.GOOGLE.COM
github.com 3600 MX 5 ALT1.ASPMX.L.GOOGLE.COM
github.com 3600 MX 10 ALT4.ASPMX.L.GOOGLE.COM
github.com 3600 MX 10 ALT3.ASPMX.L.GOOGLE.COM
github.com 3600 TXT v=spf1 ip4:192.30.252.0/22 ip4:208.74.204.0/22 ip4:46.19.168.0/23 include:_spf.google.com include:esp.github.com include:_spf.createsend.com include:mail.zendesk.com include:servers.mcsv.net ~all
github.com 3600 TXT docusign=087098e3-3d46-47b7-9b4e-8a23028154cd
_dmarc.github.com 3600 TXT v=DMARC1; p=none; rua= mailto : dmarc @ github.com
mta-sts.github.com 3600 CNAME github.github.io
www.github.com 60 A 192.30.253.113
www.github.com 60 A 192.30.253.112
www.github.com 3600 CNAME github.com

SSL/TLS Report

 Further IP addresses:   192.30.253.113 
 A record via            supplied IP "192.30.253.112"
 rDNS (192.30.253.112):  lb-192-30-253-112-iad.github.com.
 Service detected:       HTTP


 SSL/TLS protocols 
 SSLv2      not offered (OK)
 SSLv3      not offered (OK)
 TLS 1      not offered
 TLS 1.1    not offered
 TLS 1.2    offered (OK)
 TLS 1.3    not offered -- downgraded
 NPN/SPDY   not offered
 ALPN/HTTP2 http/1.1 (offered)

 SSL/TLS server implementation bugs 

 No bugs found.

 Cipher categories 

 NULL ciphers (no encryption)                  not offered (OK) -- NULL:eNULL
 Anonymous NULL Ciphers (no authentication)    not offered (OK) -- aNULL:ADH
 Export ciphers (w/o ADH+NULL)                 not offered (OK) -- EXPORT:!ADH:!NULL
 LOW: 64 Bit + DES encryption (w/o export)     not offered (OK) -- LOW:DES:!ADH:!EXP:!NULL
 Weak 128 Bit ciphers (SEED, IDEA, RC[2,4])    not offered (OK) -- MEDIUM:!aNULL:!AES:!CAMELLIA:!ARIA:!CHACHA20:!3DES
 Triple DES Ciphers (Medium)                   not offered (OK) -- 3DES:!aNULL:!ADH
 High encryption (AES+Camellia, no AEAD)       offered (OK) -- HIGH:!NULL:!aNULL:!DES:!3DES:!AESGCM:!CHACHA20:!AESGCM:!CamelliaGCM:!AESCCM8:!AESCCM
 Strong encryption (AEAD ciphers)              offered (OK) -- AESGCM:CHACHA20:AESGCM:CamelliaGCM:AESCCM8:AESCCM


 Robust (perfect) forward secrecy, (P)FS -- omitting Null Authentication/Encryption, 3DES, RC4 

 PFS is offered (OK)          ECDHE-RSA-AES256-GCM-SHA384 
                              ECDHE-RSA-AES256-SHA384 ECDHE-RSA-AES256-SHA 
                              ECDHE-RSA-AES128-GCM-SHA256 
                              ECDHE-RSA-AES128-SHA256 ECDHE-RSA-AES128-SHA 
 Elliptic curves offered:     prime256v1 


 Server preferences 

 Has server cipher order?     yes (OK)
 Negotiated protocol          TLSv1.2
 Negotiated cipher            ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Cipher order
    TLSv1.2:   ECDHE-RSA-AES128-GCM-SHA256 ECDHE-RSA-AES256-GCM-SHA384 
               ECDHE-RSA-AES128-SHA256 ECDHE-RSA-AES128-SHA 
               ECDHE-RSA-AES256-SHA384 ECDHE-RSA-AES256-SHA AES128-GCM-SHA256 
               AES256-GCM-SHA384 AES128-SHA256 AES128-SHA AES256-SHA256 
               AES256-SHA 


 Server defaults (Server Hello) 

 TLS extensions (standard)    "renegotiation info/#65281" "server name/#0"
                              "EC point formats/#11" "encrypt-then-mac/#22"
                              "extended master secret/#23"
                              "application layer protocol negotiation/#16"
 Session Ticket RFC 5077 hint (no lifetime advertised)
 SSL Session ID support       yes
 Session Resumption           Tickets: yes, ID: yes
 TLS clock skew               Random values, no fingerprinting possible 
 Signature Algorithm          SHA256 with RSA
 Server key size              RSA 2048 bits
 Server key usage             Digital Signature, Key Encipherment
 Server extended key usage    TLS Web Server Authentication, TLS Web Client Authentication
 Serial / Fingerprints        0A0630427F5BBCED6957396593B6451F / SHA1 CA06F56B258B7A0D4F2B05470939478651151984
                              SHA256 3111500C4A66012CDAE333EC3FCA1C9DDE45C954440E7EE413716BFF3663C074
 Common Name (CN)             github.com
 subjectAltName (SAN)         github.com www.github.com 
 Issuer                       DigiCert SHA2 Extended Validation Server CA (DigiCert Inc from US)
 Trust (hostname)             Ok via SAN and CN (same w/o SNI)
 Chain of trust               Ok   
 EV cert (experimental)       yes 
 Certificate Validity (UTC)   600 >= 60 days (2018-05-08 02:00 --> 2020-06-03 14:00)
 # of certificates provided   2
 Certificate Revocation List  http://crl3.digicert.com/sha2-ev-server-g2.crl
                              http://crl4.digicert.com/sha2-ev-server-g2.crl
 OCSP URI                     http://ocsp.digicert.com
 OCSP stapling                not offered
 OCSP must staple extension   --
 DNS CAA RR (experimental)    not offered
 Certificate Transparency     yes (certificate extension)


 HTTP header response @ "/" 

 HTTP Status Code             200 OK
 HTTP clock skew              +2 sec from localtime
 Strict Transport Security    365 days=31536000 s, includeSubDomains, preload
 Public Key Pinning           --
 Server banner                GitHub.com
 Application banner           --
 Cookie(s)                    4 issued: 2/4 secure, 2/4 HttpOnly
 Security headers             X-Frame-Options deny
                              X-XSS-Protection 1; mode=block
                              X-Content-Type-Options nosniff
                              Content-Security-Policy default-src 'none'; base-uri 'self';
                              block-all-mixed-content; connect-src 'self'
                              uploads.github.com status.github.com
                              collector.githubapp.com api.github.com
                              www.google-analytics.com
                              github-cloud.s3.amazonaws.com
                              github-production-repository-file-5c1aeb.s3.amazonaws.com 
                              ithub-production-upload-manifest-file-7fdce7.s3.amazonaws.com 
                              ithub-production-user-asset-6210df.s3.amazonaws.com 
                              ss://live.github.com; font-src
                              assets-cdn.github.com; form-action 'self'
                              github.com gist.github.com; frame-ancestors
                              'none'; frame-src render.githubusercontent.com;
                              img-src 'self' data: assets-cdn.github.com
                              identicons.github.com collector.githubapp.com
                              github-cloud.s3.amazonaws.com
                              *.githubusercontent.com; manifest-src 'self';
                              media-src 'none'; script-src
                              assets-cdn.github.com; style-src 'unsafe-inline'
                              assets-cdn.github.com
                              Expect-CT max-age=2592000,
                              report-uri="https://api.github.com/_private/browser/errors"
                              Referrer-Policy origin-when-cross-origin, strict-origin-when-cross-origin
 Reverse Proxy banner         --


 SSL/TLS vulnerabilities 

 Heartbleed (CVE-2014-0160)                not vulnerable (OK), no heartbeat extension
 CCS (CVE-2014-0224)                       not vulnerable (OK)
 Ticketbleed (CVE-2016-9244), experiment.  not vulnerable (OK), no session ticket extension
 ROBOT                                     not vulnerable (OK)
 Secure Renegotiation (CVE-2009-3555)      not vulnerable (OK)
 Secure Client-Initiated Renegotiation     not vulnerable (OK)
 CRIME, TLS (CVE-2012-4929)                not vulnerable (OK)
 BREACH (CVE-2013-3587)                    potentially NOT ok, uses gzip HTTP compression. - only supplied "/" tested
                                           Can be ignored for static pages or if no secrets in the page
 POODLE, SSL (CVE-2014-3566)               not vulnerable (OK)
 TLS_FALLBACK_SCSV (RFC 7507)              No fallback possible, no protocol below TLS 1.2 offered (OK)
 SWEET32 (CVE-2016-2183, CVE-2016-6329)    not vulnerable (OK)
 FREAK (CVE-2015-0204)                     not vulnerable (OK)
 DROWN (CVE-2016-0800, CVE-2016-0703)      not vulnerable on this host and port (OK)
                                           make sure you don't use this certificate elsewhere with SSLv2 enabled services
                                           https://censys.io/ipv4?q=3111500C4A66012CDAE333EC3FCA1C9DDE45C954440E7EE413716BFF3663C074
                                           could help you to find out
 LOGJAM (CVE-2015-4000), experimental      not vulnerable (OK): no DH EXPORT ciphers, no DH key detected
 BEAST (CVE-2011-3389)                     no SSL3 or TLS1 (OK)
 LUCKY13 (CVE-2013-0169), experimental     potentially VULNERABLE, uses cipher block chaining (CBC) ciphers with TLS. Check patches
 RC4 (CVE-2013-2566, CVE-2015-2808)        no RC4 ciphers detected (OK)


 Tested 364 ciphers, ordered by encryption strength 

Hexcode  Cipher Suite Name (OpenSSL)       KeyExch.   Encryption  Bits     Cipher Suite Name (RFC)
-----------------------------------------------------------------------------------------------------------------------------
 xc030   ECDHE-RSA-AES256-GCM-SHA384       ECDH 256   AESGCM      256      TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384              
 xc028   ECDHE-RSA-AES256-SHA384           ECDH 256   AES         256      TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384              
 xc014   ECDHE-RSA-AES256-SHA              ECDH 256   AES         256      TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA                 
 x9d     AES256-GCM-SHA384                 RSA        AESGCM      256      TLS_RSA_WITH_AES_256_GCM_SHA384                    
 x3d     AES256-SHA256                     RSA        AES         256      TLS_RSA_WITH_AES_256_CBC_SHA256                    
 x35     AES256-SHA                        RSA        AES         256      TLS_RSA_WITH_AES_256_CBC_SHA                       
 xc02f   ECDHE-RSA-AES128-GCM-SHA256       ECDH 256   AESGCM      128      TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256              
 xc027   ECDHE-RSA-AES128-SHA256           ECDH 256   AES         128      TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256              
 xc013   ECDHE-RSA-AES128-SHA              ECDH 256   AES         128      TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA                 
 x9c     AES128-GCM-SHA256                 RSA        AESGCM      128      TLS_RSA_WITH_AES_128_GCM_SHA256                    
 x3c     AES128-SHA256                     RSA        AES         128      TLS_RSA_WITH_AES_128_CBC_SHA256                    
 x2f     AES128-SHA                        RSA        AES         128      TLS_RSA_WITH_AES_128_CBC_SHA                       


 Ciphers per protocol, ordered by encryption strength 

Hexcode  Cipher Suite Name (OpenSSL)       KeyExch.   Encryption  Bits     Cipher Suite Name (RFC)
-----------------------------------------------------------------------------------------------------------------------------
TLS 1.3  
TLS 1.2  
 xc030   ECDHE-RSA-AES256-GCM-SHA384       ECDH 256   AESGCM      256      TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384              
 xc028   ECDHE-RSA-AES256-SHA384           ECDH 256   AES         256      TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384              
 xc014   ECDHE-RSA-AES256-SHA              ECDH 256   AES         256      TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA                 
 x9d     AES256-GCM-SHA384                 RSA        AESGCM      256      TLS_RSA_WITH_AES_256_GCM_SHA384                    
 x3d     AES256-SHA256                     RSA        AES         256      TLS_RSA_WITH_AES_256_CBC_SHA256                    
 x35     AES256-SHA                        RSA        AES         256      TLS_RSA_WITH_AES_256_CBC_SHA                       
 xc02f   ECDHE-RSA-AES128-GCM-SHA256       ECDH 256   AESGCM      128      TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256              
 xc027   ECDHE-RSA-AES128-SHA256           ECDH 256   AES         128      TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256              
 xc013   ECDHE-RSA-AES128-SHA              ECDH 256   AES         128      TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA                 
 x9c     AES128-GCM-SHA256                 RSA        AESGCM      128      TLS_RSA_WITH_AES_128_GCM_SHA256                    
 x3c     AES128-SHA256                     RSA        AES         128      TLS_RSA_WITH_AES_128_CBC_SHA256                    
 x2f     AES128-SHA                        RSA        AES         128      TLS_RSA_WITH_AES_128_CBC_SHA                       
TLS 1.1  
TLS 1  
SSLv3  
SSLv2  

 Client simulations 

 Android 2.3.7                No connection
 Android 4.0.4                No connection
 Android 4.1.1                No connection
 Android 4.2.2                No connection
 Android 4.3                  No connection
 Android 4.4.2                TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Android 5.0.0                TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Android 6.0                  TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Android 7.0                  TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 27 Win 7              No connection
 Chrome 28 Win 7              No connection
 Chrome 29 Win 7              No connection
 Chrome 30 Win 7              TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Chrome 31 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 32 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 33 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 34 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 35 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 36 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 37 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 39 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 40 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 42 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 43 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 45 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 47 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 48 OS X               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 49 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 49 XP SP3             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 50 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 51 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 57 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 65 Win 7              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 10.0.12 ESR Win 7    No connection
 Firefox 17.0.7 ESR Win 7     No connection
 Firefox 21 Fedora 19         No connection
 Firefox 21 Win 7             No connection
 Firefox 22 Win 7             No connection
 Firefox 24.2.0 ESR Win 7     No connection
 Firefox 24 Win 7             No connection
 Firefox 26 Win 8             No connection
 Firefox 27 Win 8             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 29 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 30 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 31.3.0 ESR Win 7     TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 31 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 32 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 34 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 35 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 37 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 39 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 41 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 42 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 44 OS X              TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 45 Win 7             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 46 Win 7             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 47 Win 7             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 49 Win 7             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 49 XP SP3            TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 53 Win 7             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 59 Win 7             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 IE 6 XP                      No connection
 IE 7 Vista                   No connection
 IE 8-10 Win 7                No connection
 IE 8 Win 7                   No connection
 IE 8 XP                      No connection
 IE 9 Win 7                   No connection
 IE 10 Win Phone 8.0          No connection
 IE 11 Win 7                  TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 IE 11 Win 8.1                TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 IE 11 Win Phone 8.1          TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 IE 11 Win Phone 8.1 Update   TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 IE 11 Win 10                 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 IE 11 Win 10 Preview         TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Edge 12 Win 10               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Edge 13 Win 10               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Edge 13 Win Phone 10         TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Edge 15 Win 10               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Opera 12.15 Win 7            No connection
 Opera 15 Win 7               No connection
 Opera 16 Win 7               No connection
 Opera 17 Win 7               TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Safari 5.1.9 OS X 10.6.8     No connection
 Safari 5 iOS 5.1.1           TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Safari 6.0.4 OS X 10.8.4     No connection
 Safari 6 iOS 6.0.1           TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Safari 7 iOS 7.1             TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Safari 7 OS X 10.9           TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Safari 8 iOS 8.0 Beta        TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Safari 8 iOS 8.4             TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Safari 8 OS X 10.10          TLSv1.2 ECDHE-RSA-AES128-SHA256, 256 bit ECDH (P-256)
 Safari 9 iOS 9               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Safari 9 OS X 10.11          TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Safari 10 iOS 10             TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Safari 10 OS X 10.12         TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Apple ATS 9 iOS 9            TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Tor 17.0.9 Win 7             No connection
 Java 6u45                    No connection
 Java 7u25                    No connection
 Java 8b132                   TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 8u111                   TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 8u161                   TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 8u31                    TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 9.0.4                   TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 OpenSSL 0.9.8y               No connection
 OpenSSL 1.0.1h               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 OpenSSL 1.0.1l               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 OpenSSL 1.0.2e               TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Baidu Jan 2015               No connection
 BingBot Dec 2013             No connection
 BingPreview Dec 2013         No connection
 BingPreview Jan 2015         TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 BingPreview Jun 2014         No connection
 Yahoo Slurp Jan 2015         TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Googlebot Feb 2015           TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Googlebot Feb 2018           TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Googlebot Jun 2014           No connection
 Googlebot Oct 2013           No connection
 Yahoo Slurp Jun 2014         TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Yahoo Slurp Oct 2013         No connection
 YandexBot 3.0                No connection
 YandexBot Jan 2015           TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 YandexBot May 2014           No connection
 YandexBot Sep 2014           TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)


Security HTTP Headers

HTTP Strict Transport Security (HSTS)   offered (OK)
Content Security Policy (CSP)           offered (OK)
X-Frame-Options                         offered (OK)
X-XSS-Protection                        offered (OK)
X-Content-Type-Options                  offered (OK)
Expect-CT                               offered (OK)
Referrer Policy                         offered (OK)
Feature Policy                          not offered
Web Server Version Disclosure           not offered (OK)
Web Application Disclosure              not offered (OK)
HTTP Public Key Pins (HPKP)             not offered, deprecated

Connection Performance
Keep Alive Connection                   not offered
Content Encoding (Compression)          offered (Gzip) OK, for static pages or if no secrets in the page

Raw HTTP Headers

HTTP/1.1 200 OK
Cache-Control no-cache
Content-Encoding gzip
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<dd><input type="text" name="user[email]" id="user[email]" class="form-control form-control-lg input-block js-email-notice-trigger" placeholder="you@example.com" /> </dd>
</dl>
<dl class="form-group">
<dt class="input-label"><label class="form-label f5" for="user[password]">Password</label></dt>
<dd><input type="password" name="user[password]" id="user[password]" class="form-control form-control-lg input-block" placeholder="Create a password" /></dd>
<dd>
<p class="form-control-note">Make sure it's at least 7 characters, including a number, and a lowercase letter.</p>
</dd>
</dl>
<input type="hidden" name="source" class="js-signup-source" value="form-home" /> <input type="text" name="required_field_957b" id="required_field_957b" hidden="hidden" class="form-control" /> <input type="hidden" name="timestamp" value="1539264651823" class="form-control" /> <input type="hidden" name="timestamp_secret" value="4e486292dd734104dae5b64088fb4eec20887f6ff3e31c8d425f8a95168e1c2b" class="form-control" /> <button class="btn-mktg btn-primary-mktg btn-large-mktg f4 btn-block" type="submit" data-ga-click="Signup, Attempt, location:teams;">Sign up for GitHub</button>
<p class="form-control-note mb-0 text-center">By clicking “Sign up for GitHub”, you agree to our <a class="" href="https://help.github.com/terms" target="_blank">terms of service</a> and <a class="" href="https://help.github.com/privacy" target="_blank">privacy statement</a>. <span class="js-email-notice">We’ll occasionally send you account related emails.</span></p>
</form>
</div>
<div class="d-sm-none text-center"><a rel="nofollow" class="btn-mktg btn-primary-mktg btn-large-mktg" data-ga-click="Signup, Attempt, location:jumbotron mobile" href="/join?source=button-home">Sign up for GitHub</a></div>
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<div class="col-md-6 d-md-flex flex-justify-end width-full px-4 px-sm-6 pl-lg-3 py-6 banner-half d-sm-flex flex-items-start c1"><img src="https://assets-cdn.github.com/images/modules/site/events/universe-icon.svg" alt="Universe Logo" width="64" class="mb-1 mr-3 mr-md-4" />
<div>
<h4 class="h3-mktg mb-2">GitHub Universe</h4>
<p>A conference for the builders, planners, and leaders defining the future of&nbsp;software</p>
<a href="https://githubuniverse.com/get-tickets/" class="Bump-link h4-mktg text-blue-light no-underline" data-ga-click="Home Universe banner, click, text:Get tickets">Get tickets <span class="Bump-link-symbol">→</span></a></div>
</div>
<div class="col-md-6 col-sm-10 col-md-12 px-4 px-sm-6 py-6 banner-half c2">
<p>Through a combination of creativity, determination, and (a lot of) carefully crafted code, the future is being built every&nbsp;day.</p>
<a href="/buildingthefuture" class="Bump-link h4-mktg text-blue-light no-underline" data-ga-click="Home Building the Future banner, click, text:See what's being built">Learn more <span class="Bump-link-symbol">→</span></a></div>
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<img class="position-absolute bottom-n6 right-n3 right-md-5 right-lg-8 col-3 c3" src="https://assets-cdn.github.com/images/modules/site/building-the-future/green-purple-hexagons.png" alt="" /></div>
<div class="enterprise-prompt container-lg p-responsive col-md-9 col-lg-10 bg-white p-6 mx-auto text-center" data-ga-load="Home Enterprise prompt, view, contact request">
<h1 class="h1-mktg">Try GitHub Enterprise</h1>
<p class="mb-3 text-gray">Use GitHub on-premises with your own servers or in a private cloud with <a href="/pricing/enterprise" data-ga-click="Home Enterprise prompt, click, text:GitHub Enterprise" class="link-mktg">GitHub Enterprise</a>. Improve your developer efficiency with flexible deployment options, centralized permissions, hundreds of integrations, technical support, and more.</p>
<p class="mb-3"><a class="btn-mktg" href="https://enterprise.github.com/contact" data-ga-click="Home Enterprise prompt, click, text:Contact Sales">Contact Sales</a></p>
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<div class="container-lg p-responsive text-center py-7 py-md-8 py-lg-9">
<h3 class="h3-mktg text-normal text-gray-light mb-4 lh-condensed">More than 1.8 million businesses and organizations use GitHub</h3>
<ul class="d-flex flex-justify-center flex-items-center flex-wrap list-style-none mt-2 mt-md-3 grayscale">
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/airbnb-logo.png" alt="Airbnb" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/sap-logo.png" alt="SAP" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/ibm-logo.png" alt="IBM" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/google-logo.png" alt="Google" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/paypal-logo.png" alt="PayPal" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/bloomberg-logo.png" alt="Bloomberg" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/spotify-logo.png" alt="Spotify" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/swift-logo.png" alt="Swift" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/facebook-logo.png" alt="Rails" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/node-logo.png" alt="Node" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/nasa-logo.png" alt="Nasa" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
<li><img src="https://assets-cdn.github.com/images/modules/site/logos/walmart-logo.png" alt="Walmart" class="logo-img-sm px-2 px-sm-4 px-md-5 my-md-3" /></li>
</ul>
</div>
<div class="py-7 py-md-8 py-lg-9">
<div class="container-lg p-responsive pb-6">
<h6 class="h4 text-mono text-normal text-gray text-center">GitHub for teams</h6>
<h2 class="h00-mktg lh-condensed mt-3 mb-2 text-center">A better way to work together</h2>
<p class="lead-mktg text-gray text-center col-md-8 mx-auto mb-4">GitHub brings teams together to work through problems, move ideas forward, and learn from each other along&nbsp;the&nbsp;way.</p>
<div class="text-center"><a class="btn-mktg btn-large-mktg btn-outline-mktg Bump-link" data-ga-click="Signup, Attempt, location:teams;" href="/join?plan=business&amp;setup_organization=true&amp;source=business-page">Sign up your team <span class="Bump-link-symbol">→</span></a></div>
</div>
<div class="container-xl p-responsive position-relative overflow-hidden d-lg-flex pt-6">
<div class="col-10 col-sm-7 mx-auto mx-lg-6 mb-sm-3"><img src="https://assets-cdn.github.com/images/modules/site/home-illo-team.svg" alt="" class="d-block width-fit mx-auto" /></div>
<div class="col-lg-5"><a href="/features/code-review" class="summarylink">
<div class="summarylink-illustration"><img src="https://assets-cdn.github.com/images/modules/site/home-illo-team-code.svg" alt="" class="width-fit mx-auto" /></div>
<div class="summarylink-btn d-flex flex-justify-between flex-items-center f5 text-gray-dark rounded-1 p-sm-4 my-4 my-sm-0">
<div class="col-10">
<h3 class="alt-h3 mb-1">Write better code</h3>
<p class="mb-0">Collaboration makes perfect. The conversations and code reviews that happen in Pull Requests help your team share the weight of your work and improve the software you build. <span class="link-mktg">Learn about code review.</span></p>
</div>
<svg class="octicon octicon-triangle-right text-blue" viewbox="0 0 6 16" version="1.1" width="6" height="16" aria-hidden="true">
<path fill-rule="evenodd" d="M0 14l6-6-6-6v12z"></path>
</svg></div>
</a> <a href="/features/project-management" class="summarylink">
<div class="summarylink-illustration"><img src="https://assets-cdn.github.com/images/modules/site/home-illo-team-chaos.svg" alt="" class="width-fit mx-auto" /></div>
<div class="summarylink-btn d-flex flex-justify-between flex-items-center f5 text-gray-dark rounded-1 p-sm-4 my-4 my-sm-0">
<div class="col-10">
<h3 class="alt-h3 mb-1">Manage your chaos</h3>
<p class="mb-0">Take a deep breath. On GitHub, project management happens in Issues and Projects, right alongside your code. All you have to do is mention a teammate to get them involved. <span class="link-mktg">Learn about project management.</span></p>
</div>
<svg class="octicon octicon-triangle-right text-blue" viewbox="0 0 6 16" version="1.1" width="6" height="16" aria-hidden="true">
<path fill-rule="evenodd" d="M0 14l6-6-6-6v12z"></path>
</svg></div>
</a> <a href="/features/integrations" class="summarylink">
<div class="summarylink-illustration"><img src="https://assets-cdn.github.com/images/modules/site/home-illo-team-tools.svg" alt="" class="width-fit mx-auto" /></div>
<div class="summarylink-btn d-flex flex-justify-between flex-items-center f5 text-gray-dark rounded-1 p-sm-4 my-4 my-sm-0">
<div class="col-10">
<h3 class="alt-h3 mb-1">Find the right tools</h3>
<p class="mb-0">Browse and buy apps from GitHub Marketplace with your GitHub account. Find the tools you like or discover new favorites—then start using them in minutes. <span class="link-mktg">Learn about integrations.</span></p>
</div>
<svg class="octicon octicon-triangle-right text-blue" viewbox="0 0 6 16" version="1.1" width="6" height="16" aria-hidden="true">
<path fill-rule="evenodd" d="M0 14l6-6-6-6v12z"></path>
</svg></div>
</a></div>
</div>
</div>
<div class="py-7 py-md-8 py-lg-9 container-lg p-responsive">
<h6 class="h4 text-mono text-normal text-gray text-center">Security and administration</h6>
<h2 class="h00-mktg mt-3 mb-2 text-center">Boxes? Check.</h2>
<p class="lead-mktg text-gray text-center col-md-8 mx-auto mb-4">We worry about your administrative and security needs so you don’t have to. From flexible hosting to authentication options, GitHub can help you meet your team’s&nbsp;requirements.</p>
<p class="text-center mb-5"><a href="/business" class="btn-mktg btn-large-mktg btn-outline-mktg mx-auto Bump-link"><span class="d-sm-none">How GitHub works for businesses <span class="Bump-link-symbol">→</span></span> <span class="d-none d-sm-inline">See how GitHub works for businesses <span class="Bump-link-symbol">→</span></span></a></p>
<div class="d-md-flex flex-items-center flex-row-reverse mt-6 mb-3">
<div class="col-md-6 mx-auto px-5 pr-md-0 text-center"><img src="https://assets-cdn.github.com/images/modules/site/home-illo-business.png" alt="Security and administration" class="width-fit mb-4" /></div>
<div class="col-md-6 mx-auto text-md-left f5 p-sm-6">
<h3 class="h3-mktg text-normal mb-1">Code security</h3>
<p class="text-gray mb-3 mb-md-5">Prevent problems before they happen. Protected branches, signed commits, and required status checks protect your work and help you maintain a high standard for your code.</p>
<h3 class="h3-mktg text-normal mb-1 mt-sm-6">Access controlled</h3>
<p class="text-gray mb-3 mb-md-5">Encourage teams to work together while limiting access to those who need it with granular permissions and authentication through SAML/SSO and LDAP.</p>
</div>
</div>
<a href="/pricing" class="col-md-7 mx-auto Tile Tile--dots clearfix p-4 border pt-5 no-underline Bump-link bg-white c4">
<div class="float-left"><svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 64 64" class="mr-4" width="64px">
<title>1clr-code-hosting</title>
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</svg></div>
<div class="overflow-hidden">
<h4 class="h4-mktg">Hosted where you need it</h4>
<p class="f5 text-gray mr-2">Securely and reliably host your work on GitHub.com. Or, deploy GitHub Enterprise on your own servers or in a private cloud using Amazon Web Services, Azure or Google Cloud Platform.</p>
<p>Compare plans <span class="Bump-link-symbol">→</span></p>
</div>
</a></div>
<div class="py-7 py-md-8 py-lg-9 container-lg p-responsive text-center">
<div class="col-md-8 py-md-6 mx-auto">
<h6 class="h4 text-mono text-normal text-gray">Integrations</h6>
<h2 class="h00-mktg lh-condensed mt-3 mb-2">Build on GitHub</h2>
<p class="lead-mktg text-gray mb-4 px-md-3">Customize your process with GitHub apps and an intuitive API. Integrate the tools you already use or discover new favorites to create a happier, more efficient way of working.</p>
<p class="f4 text-center mb-6"><a href="/features/integrations" class="btn-mktg btn-large-mktg btn-outline-mktg mx-auto Bump-link">Learn about integrations <span class="Bump-link-symbol">→</span></a></p>
</div>
<div class="apps-cluster d-flex flex-wrap flex-justify-center pb-6">
<div class="CircleBadge CircleBadge--medium CircleBadge--feature tooltipped tooltipped-s tooltipped-no-delay c5" aria-label="Slack"><img src="https://assets-cdn.github.com/images/modules/site/integrators/slackhq.png" alt="Slack" class="CircleBadge-icon" /></div>
<div class="CircleBadge CircleBadge--medium CircleBadge--feature tooltipped tooltipped-s tooltipped-no-delay c6" aria-label="ZenHub"><img src="https://assets-cdn.github.com/images/modules/site/integrators/zenhubio.png" alt="ZenHub" class="CircleBadge-icon" /></div>
<div class="CircleBadge CircleBadge--medium CircleBadge--feature tooltipped tooltipped-s tooltipped-no-delay c7" aria-label="Travis CI"><img src="https://assets-cdn.github.com/images/modules/site/integrators/travis-ci.png" alt="Travis CI" class="CircleBadge-icon" /></div>
<div class="CircleBadge CircleBadge--medium CircleBadge--feature tooltipped tooltipped-s tooltipped-no-delay c8" aria-label="Atom"><img src="https://assets-cdn.github.com/images/modules/site/integrators/atom.png" alt="Atom" class="CircleBadge-icon" /></div>
<div class="CircleBadge CircleBadge--medium CircleBadge--feature tooltipped tooltipped-s tooltipped-no-delay c9" aria-label="Circle CI"><img src="https://assets-cdn.github.com/images/modules/site/integrators/circleci.png" alt="Circle CI" class="CircleBadge-icon" /></div>
<div class="CircleBadge CircleBadge--medium CircleBadge--feature tooltipped tooltipped-s tooltipped-no-delay c10" aria-label="Google"><img src="https://assets-cdn.github.com/images/modules/site/integrators/google.png" alt="Google" class="CircleBadge-icon" /></div>
<div class="CircleBadge CircleBadge--medium CircleBadge--feature hide-sm tooltipped tooltipped-s tooltipped-no-delay c11" aria-label="Code Climate"><img src="https://assets-cdn.github.com/images/modules/site/integrators/codeclimate.png" alt="Code Climate" class="CircleBadge-icon" /></div>
</div>
<div class="col-md-8 py-md-6 mx-auto">
<p class="my-2 alt-text-small col-sm-8 col-md-6 mx-auto text-gray">Sometimes, there’s more than one tool for the job. Why not try something new?</p>
<p><a href="/marketplace" class="no-underline Bump-link">Browse GitHub Marketplace <span class="Bump-link-symbol">→</span></a></p>
</div>
</div>
<div class="py-7 py-md-8 py-lg-9">
<div class="container-lg p-responsive">
<h6 class="h4 text-mono text-normal text-gray text-center">Community</h6>
<h2 class="h00-mktg mt-3 mb-4 lh-condensed text-center">Welcome home,<br />
developers</h2>
<p class="lead-mktg text-gray text-center col-md-8 mx-auto">GitHub is home to the world’s largest community of developers and their&nbsp;projects...</p>
</div>
<div class="d-flex flex-nowrap flex-items-stretch flex-lg-items-start overflow-auto px-2 py-6 my-6">
<article class="Story Story--large Story--stagger col-6 col-sm-3 p-2"><a href="/open-source/stories/ariya" class="Story-link d-block d-lg-flex height-full rounded-1 box-shadow-extra-large">
<div class="col-lg-6 position-relative"><img class="d-block width-full" src="https://assets-cdn.github.com/images/modules/site/stories/developers/ariya.png" /></div>
<div class="d-lg-flex flex-items-center col-lg-6 width-full text-center p-3 py-lg-0">
<h1 class="Story-title h3-mktg text-normal link-gray-dark lh-condensed mb-1">Ariya Hidayat</h1>
<p class="f6 text-mono text-gray">PhantomJS maintainer</p>
</div>
</a></article>
<article class="Story Story--large Story--stagger col-6 col-sm-3 p-2"><a href="/open-source/stories/freakboy3742" class="Story-link d-block d-lg-flex height-full rounded-1 box-shadow-extra-large">
<div class="col-lg-6 position-relative"><img class="d-block width-full" src="https://assets-cdn.github.com/images/modules/site/stories/developers/freakboy3742.png" /></div>
<div class="d-lg-flex flex-items-center col-lg-6 width-full text-center p-3 py-lg-0">
<h1 class="Story-title h3-mktg text-normal link-gray-dark lh-condensed mb-1">Russell Keith-Magee</h1>
<p class="f6 text-mono text-gray">PyBee maintainer</p>
</div>
</a></article>
<article class="Story Story--large Story--stagger col-6 col-sm-3 p-2"><a href="/business/customers/mailchimp" class="Story-link Story-link--customer d-block d-lg-flex height-full rounded-1 box-shadow-extra-large">
<div class="col-lg-6 position-relative"><img class="d-block width-full" src="https://assets-cdn.github.com/images/modules/site/stories/customers/mailchimp.png" /></div>
<div class="d-lg-flex flex-items-center col-lg-6 width-full text-center p-3 py-lg-0">
<h1 class="Story-title h3-mktg text-normal link-gray-dark lh-condensed mb-1">MailChimp</h1>
<p class="f6 text-mono text-gray">Marketing customer</p>
</div>
</a></article>
<article class="Story Story--large Story--stagger col-6 col-sm-3 p-2"><a href="/open-source/stories/kris-nova" class="Story-link d-block d-lg-flex height-full rounded-1 box-shadow-extra-large">
<div class="col-lg-6 position-relative"><img class="d-block width-full" src="https://assets-cdn.github.com/images/modules/site/stories/developers/kris-nova.png" /></div>
<div class="d-lg-flex flex-items-center col-lg-6 width-full text-center p-3 py-lg-0">
<h1 class="Story-title h3-mktg text-normal link-gray-dark lh-condensed mb-1">Kris Nova</h1>
<p class="f6 text-mono text-gray">Kubernetes/kops maintainer</p>
</div>
</a></article>
<article class="Story Story--large Story--stagger col-6 col-sm-3 p-2"><a href="/open-source/stories/yyx990803" class="Story-link d-block d-lg-flex height-full rounded-1 box-shadow-extra-large">
<div class="col-lg-6 position-relative"><img class="d-block width-full" src="https://assets-cdn.github.com/images/modules/site/stories/developers/yyx990803.png" /></div>
<div class="d-lg-flex flex-items-center col-lg-6 width-full text-center p-3 py-lg-0">
<h1 class="Story-title h3-mktg text-normal link-gray-dark lh-condensed mb-1">Evan You</h1>
<p class="f6 text-mono text-gray">Vue maintainer</p>
</div>
</a></article>
<article class="Story Story--large Story--stagger col-6 col-sm-3 p-2"><a href="/business/customers/mapbox" class="Story-link Story-link--customer d-block d-lg-flex height-full rounded-1 box-shadow-extra-large">
<div class="col-lg-6 position-relative"><img class="d-block width-full" src="https://assets-cdn.github.com/images/modules/site/stories/customers/mapbox.png" /></div>
<div class="d-lg-flex flex-items-center col-lg-6 width-full text-center p-3 py-lg-0">
<h1 class="Story-title h3-mktg text-normal link-gray-dark lh-condensed mb-1">Mapbox</h1>
<p class="f6 text-mono text-gray">Software customer</p>
</div>
</a></article>
<article class="Story Story--large Story--stagger col-6 col-sm-3 p-2"><a href="/open-source/stories/jessfraz" class="Story-link d-block d-lg-flex height-full rounded-1 box-shadow-extra-large">
<div class="col-lg-6 position-relative"><img class="d-block width-full" src="https://assets-cdn.github.com/images/modules/site/stories/developers/jessfraz.png" /></div>
<div class="d-lg-flex flex-items-center col-lg-6 width-full text-center p-3 py-lg-0">
<h1 class="Story-title h3-mktg text-normal link-gray-dark lh-condensed mb-1">Jess Frazelle</h1>
<p class="f6 text-mono text-gray">Kubernetes, previously Docker maintainer</p>
</div>
</a></article>
</div>
<div class="container-lg p-responsive">
<p class="lead-mktg text-gray text-center col-md-8 mx-auto pb-md-6">...whether you’re making your first commit or sending a Rover to Mars, there’s room for you here, too.</p>
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<div class="js-stale-session-flash stale-session-flash flash flash-warn flash-banner d-none"><svg class="octicon octicon-alert" viewbox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true">
<path fill-rule="evenodd" d="M8.893 1.5c-.183-.31-.52-.5-.887-.5s-.703.19-.886.5L.138 13.499a.98.98 0 0 0 0 1.001c.193.31.53.501.886.501h13.964c.367 0 .704-.19.877-.5a1.03 1.03 0 0 0 .01-1.002L8.893 1.5zm.133 11.497H6.987v-2.003h2.039v2.003zm0-3.004H6.987V5.987h2.039v4.006z"></path>
</svg> <span class="signed-in-tab-flash">You signed in with another tab or window. <a href="">Reload</a> to refresh your session.</span> <span class="signed-out-tab-flash">You signed out in another tab or window. <a href="">Reload</a> to refresh your session.</span></div>
<div class="facebox facebox-popup c13" id="facebox">
<div class="facebox-content" role="dialog" aria-labelledby="facebox-header" aria-describedby="facebox-description"></div>
<button type="button" class="facebox-close js-facebox-close" aria-label="Close modal"><svg class="octicon octicon-x" viewbox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true">
<path fill-rule="evenodd" d="M7.48 8l3.75 3.75-1.48 1.48L6 9.48l-3.75 3.75-1.48-1.48L4.52 8 .77 4.25l1.48-1.48L6 6.52l3.75-3.75 1.48 1.48L7.48 8z"></path>
</svg></button></div>
<template id="site-details-dialog">
<details class="details-reset details-overlay details-overlay-dark lh-default text-gray-dark" open="">
<summary aria-haspopup="dialog" aria-label="Close dialog"></summary>
<button class="Box-btn-octicon m-0 btn-octicon position-absolute right-0 top-0" type="button" aria-label="Close dialog" data-close-dialog=""><svg class="octicon octicon-x" viewbox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true">
<path fill-rule="evenodd" d="M7.48 8l3.75 3.75-1.48 1.48L6 9.48l-3.75 3.75-1.48-1.48L4.52 8 .77 4.25l1.48-1.48L6 6.52l3.75-3.75 1.48 1.48L7.48 8z"></path>
</svg></button>
<div class="octocat-spinner my-6 js-details-dialog-spinner"></div>
</details>
</template>
<div class="Popover js-hovercard-content position-absolute Popover-message Popover-message--bottom-left Popover-message--large Box box-shadow-large c14" tabindex="0"></div>
<div id="hovercard-aria-description" class="sr-only">Press h to open a hovercard with more details.</div>
</body>
</html>

Warnings Errors and Accessibility

line 187 column 43 - Warning: discarding unexpected </option>
line 187 column 52 - Error: discarding unexpected </form>
line 188 column 7 - Warning: missing </label> before <div>
line 207 column 124 - Warning: inserting implicit <label>
line 207 column 124 - Warning: missing </label> before <ul>
line 210 column 1 - Warning: inserting implicit <label>
line 211 column 107 - Warning: inserting implicit <label>
line 219 column 162 - Warning: inserting implicit <label>
line 223 column 1 - Warning: inserting implicit <label>
line 232 column 165 - Warning: inserting implicit <label>
line 241 column 1 - Warning: inserting implicit <label>
line 247 column 1 - Warning: inserting implicit <label>
line 251 column 7 - Error: discarding unexpected </label>
line 257 column 9 - Warning: missing </span> before <div>
line 258 column 54 - Warning: inserting implicit <span>
line 263 column 9 - Error: discarding unexpected </span>
line 298 column 19 - Error: <auto-check> is not recognized! Did you mean to enable the custom-tags option?
line 298 column 19 - Error: discarding unexpected <auto-check>

Accessibility Checks:

<HTMLYSE> found 23 warnings and 21 errors! Not all warnings/errors were shown.