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Test DNS, SSL/TLS, HTTP and HTML

Test results for dnslookup.org

Scanned on: Mon Jun 14 06:02:57 2021 GMT. Tested in 122 seconds

DNS Report

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

Raw DNS Records

Name TTL Type Data
dnslookup.org 3600 SOA ben.ns.cloudflare.com dns @ cloudflare.com 2037442222 10000 2400 604800 3600
dnslookup.org 86400 NS ben.ns.cloudflare.com, IPv4: 172.64.33.103, IPv6: 2606:4700:58:0:0:0:adf5:3b67
dnslookup.org 86400 NS zoe.ns.cloudflare.com, IPv4: 108.162.192.149, IPv6: 2803:f800:50:0:0:0:6ca2:c095
dnslookup.org 300 A 172.67.134.24
dnslookup.org 300 A 104.21.5.253
dnslookup.org 300 AAAA 2606:4700:3030:0:0:0:6815:5fd
dnslookup.org 300 AAAA 2606:4700:3032:0:0:0:ac43:8618
dnslookup.org 300 MX 1 aspmx.l.google.com
dnslookup.org 300 MX 5 alt1.aspmx.l.google.com
dnslookup.org 300 MX 5 alt2.aspmx.l.google.com
dnslookup.org 300 MX 10 aspmx2.googlemail.com
dnslookup.org 300 MX 10 aspmx3.googlemail.com
dnslookup.org 300 TXT google-site-verification=z7C7TMed3yeX1oNdmgiHjj0D0Dj8N0ud8xJOjvBYDjY
www.dnslookup.org 300 A 104.21.5.253
www.dnslookup.org 300 A 172.67.134.24
www.dnslookup.org 300 AAAA 2606:4700:3030:0:0:0:6815:5fd
www.dnslookup.org 300 AAAA 2606:4700:3032:0:0:0:ac43:8618

SSL/TLS Report

 Further IP addresses:   172.67.134.24 2606:4700:3030::6815:5fd
                         2606:4700:3032::ac43:8618 
 A record via            supplied IP "104.21.5.253"
 rDNS (104.21.5.253):    --
 Service detected:       HTTP


 SSL/TLS protocols 
 SSLv2      not offered (OK)
 SSLv3      not offered (OK)
 TLS 1      offered
 TLS 1.1    offered
 TLS 1.2    offered (OK)
 TLS 1.3    offered (OK): final
 NPN/SPDY   h2, http/1.1 (advertised)
 ALPN/HTTP2 h2, 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)          TLS_AES_256_GCM_SHA384 
                              TLS_CHACHA20_POLY1305_SHA256 
                              ECDHE-ECDSA-CHACHA20-POLY1305-OLD 
                              ECDHE-ECDSA-AES256-GCM-SHA384 
                              ECDHE-ECDSA-AES256-SHA384 ECDHE-ECDSA-AES256-SHA 
                              ECDHE-ECDSA-CHACHA20-POLY1305 
                              TLS_AES_128_GCM_SHA256 
                              ECDHE-ECDSA-AES128-GCM-SHA256 
                              ECDHE-ECDSA-AES128-SHA256 ECDHE-ECDSA-AES128-SHA 
 Elliptic curves offered:     prime256v1 secp384r1 secp521r1 X25519 


 Server preferences 

 Has server cipher order?     yes (OK)
 Negotiated protocol          TLSv1.3
 Negotiated cipher            TLS_AES_256_GCM_SHA384, 253 bit ECDH (X25519)
 Cipher order
    TLSv1:     ECDHE-ECDSA-AES128-SHA ECDHE-ECDSA-AES256-SHA 
    TLSv1.1:   ECDHE-ECDSA-AES128-SHA ECDHE-ECDSA-AES256-SHA 
    TLSv1.2:   ECDHE-ECDSA-CHACHA20-POLY1305-OLD ECDHE-ECDSA-CHACHA20-POLY1305 
               ECDHE-ECDSA-AES128-GCM-SHA256 ECDHE-ECDSA-AES128-SHA 
               ECDHE-ECDSA-AES128-SHA256 ECDHE-ECDSA-AES256-GCM-SHA384 
               ECDHE-ECDSA-AES256-SHA ECDHE-ECDSA-AES256-SHA384 
    TLSv1.3:   TLS_AES_256_GCM_SHA384 TLS_CHACHA20_POLY1305_SHA256 
               TLS_AES_128_GCM_SHA256 


 Server defaults (Server Hello) 

 TLS extensions (standard)    "server name/#0" "renegotiation info/#65281"
                              "EC point formats/#11" "session ticket/#35"
                              "status request/#5" "next protocol/#13172"
                              "key share/#51" "supported versions/#43"
                              "extended master secret/#23"
                              "application layer protocol negotiation/#16"
 Session Ticket RFC 5077 hint 64800 seconds, session tickets keys seems to be rotated < daily
 SSL Session ID support       yes
 Session Resumption           Tickets: yes, ID: yes
 TLS clock skew               +167 sec from localtime
 Signature Algorithm          ECDSA with SHA256
 Server key size              EC 256 bits
 Server key usage             Digital Signature
 Server extended key usage    TLS Web Server Authentication, TLS Web Client Authentication
 Serial / Fingerprints        0456D33952D32D071ACE7CC484EC1869 / SHA1 7342E840921C5AE7FDBA29F6406A60EEF7D5F799
                              SHA256 8E4843B3F5CE9E830FE1A0D0588B24F4963E6E77B5BA8D37D3B186F3E62701E3
 Common Name (CN)             sni.cloudflaressl.com (request w/o SNI didn't succeed, usual for EC certificates)
 subjectAltName (SAN)         dnslookup.org *.dnslookup.org
                              sni.cloudflaressl.com 
 Issuer                       Cloudflare Inc ECC CA-3 (Cloudflare, Inc. from US)
 Trust (hostname)             Ok via SAN (SNI mandatory)
 Chain of trust               Ok   
 EV cert (experimental)       no 
 Certificate Validity (UTC)   expires < 60 days (49) (2020-08-02 00:00 --> 2021-08-02 12:00)
 # of certificates provided   2
 Certificate Revocation List  http://crl3.digicert.com/CloudflareIncECCCA-3.crl
                              http://crl4.digicert.com/CloudflareIncECCCA-3.crl
 OCSP URI                     http://ocsp.digicert.com
 OCSP stapling                offered
 OCSP must staple extension   --
 DNS CAA RR (experimental)    not offered
 Certificate Transparency     yes (certificate extension)


 HTTP header response @ "/" 

 HTTP Status Code             502 Bad Gateway. Oh, didn't expect "502 Bad Gateway"
 HTTP clock skew              +167 sec from localtime
 Strict Transport Security    not offered
 Public Key Pinning           --
 Server banner                cloudflare
 Application banner           --
 Cookie(s)                    2 issued: NONE secure, NONE HttpOnly -- maybe better try target URL of 30x
 Security headers             X-Frame-Options SAMEORIGIN
 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 tickets
 ROBOT                                     Server does not support any cipher suites that use RSA key transport
 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)                    no HTTP compression (OK)  - only supplied "/" tested
 POODLE, SSL (CVE-2014-3566)               not vulnerable (OK)
 TLS_FALLBACK_SCSV (RFC 7507)              Downgrade attack prevention supported (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)
                                           no RSA certificate, thus certificate can't be used with SSLv2 elsewhere
 LOGJAM (CVE-2015-4000), experimental      not vulnerable (OK): no DH EXPORT ciphers, no DH key detected
 BEAST (CVE-2011-3389)                     TLS1: ECDHE-ECDSA-AES128-SHA
                                                 ECDHE-ECDSA-AES256-SHA 
                                           VULNERABLE -- but also supports higher protocols  TLSv1.1 TLSv1.2 (likely mitigated)
 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)
-----------------------------------------------------------------------------------------------------------------------------
 x1302   TLS_AES_256_GCM_SHA384            ECDH 253   AESGCM      256      TLS_AES_256_GCM_SHA384                             
 x1303   TLS_CHACHA20_POLY1305_SHA256      ECDH 253   ChaCha20    256      TLS_CHACHA20_POLY1305_SHA256                       
 xcc14   ECDHE-ECDSA-CHACHA20-POLY1305-OLD ECDH 256   ChaCha20    256      TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256_OLD  
 xc02c   ECDHE-ECDSA-AES256-GCM-SHA384     ECDH 256   AESGCM      256      TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384            
 xc024   ECDHE-ECDSA-AES256-SHA384         ECDH 256   AES         256      TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384            
 xc00a   ECDHE-ECDSA-AES256-SHA            ECDH 256   AES         256      TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA               
 xcca9   ECDHE-ECDSA-CHACHA20-POLY1305     ECDH 253   ChaCha20    256      TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256      
 x1301   TLS_AES_128_GCM_SHA256            ECDH 253   AESGCM      128      TLS_AES_128_GCM_SHA256                             
 xc02b   ECDHE-ECDSA-AES128-GCM-SHA256     ECDH 256   AESGCM      128      TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256            
 xc023   ECDHE-ECDSA-AES128-SHA256         ECDH 256   AES         128      TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256            
 xc009   ECDHE-ECDSA-AES128-SHA            ECDH 256   AES         128      TLS_ECDHE_ECDSA_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  
 x1302   TLS_AES_256_GCM_SHA384            ECDH 253   AESGCM      256      TLS_AES_256_GCM_SHA384                             
 x1303   TLS_CHACHA20_POLY1305_SHA256      ECDH 253   ChaCha20    256      TLS_CHACHA20_POLY1305_SHA256                       
 x1301   TLS_AES_128_GCM_SHA256            ECDH 253   AESGCM      128      TLS_AES_128_GCM_SHA256                             
TLS 1.2  
 xcc14   ECDHE-ECDSA-CHACHA20-POLY1305-OLD ECDH 256   ChaCha20    256      TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256_OLD  
 xc02c   ECDHE-ECDSA-AES256-GCM-SHA384     ECDH 256   AESGCM      256      TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384            
 xc024   ECDHE-ECDSA-AES256-SHA384         ECDH 256   AES         256      TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384            
 xc00a   ECDHE-ECDSA-AES256-SHA            ECDH 256   AES         256      TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA               
 xcca9   ECDHE-ECDSA-CHACHA20-POLY1305     ECDH 253   ChaCha20    256      TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256      
 xc02b   ECDHE-ECDSA-AES128-GCM-SHA256     ECDH 256   AESGCM      128      TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256            
 xc023   ECDHE-ECDSA-AES128-SHA256         ECDH 256   AES         128      TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256            
 xc009   ECDHE-ECDSA-AES128-SHA            ECDH 256   AES         128      TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA               
TLS 1.1  
 xc00a   ECDHE-ECDSA-AES256-SHA            ECDH 256   AES         256      TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA               
 xc009   ECDHE-ECDSA-AES128-SHA            ECDH 256   AES         128      TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA               
TLS 1  
 xc00a   ECDHE-ECDSA-AES256-SHA            ECDH 256   AES         256      TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA               
 xc009   ECDHE-ECDSA-AES128-SHA            ECDH 256   AES         128      TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA               
SSLv3  
SSLv2  

 Client simulations 

 Android 2.3.7                No connection
 Android 4.0.4                TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Android 4.1.1                TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Android 4.2.2                TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Android 4.3                  TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Android 4.4.2                TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Android 5.0.0                TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305-OLD, 256 bit ECDH (P-256)
 Android 6.0                  TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305-OLD, 256 bit ECDH (P-256)
 Android 7.0                  TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
 Chrome 27 Win 7              TLSv1.1 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Chrome 28 Win 7              TLSv1.1 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Chrome 29 Win 7              TLSv1.1 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Chrome 30 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Chrome 31 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 32 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 33 Win 7              TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305-OLD, 256 bit ECDH (P-256)
 Chrome 34 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 35 Win 7              TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305-OLD, 256 bit ECDH (P-256)
 Chrome 36 Win 7              TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305-OLD, 256 bit ECDH (P-256)
 Chrome 37 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 39 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 40 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 42 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 43 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 45 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 47 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 48 OS X               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 49 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Chrome 49 XP SP3             No connection
 Chrome 50 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Chrome 51 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Chrome 57 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Chrome 65 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Chrome 69 Win 7              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Chrome 70 Win 10             TLSv1.3 TLS_AES_128_GCM_SHA256, 253 bit ECDH (X25519)
 Firefox 10.0.12 ESR Win 7    TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Firefox 17.0.7 ESR Win 7     TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Firefox 21 Fedora 19         No connection
 Firefox 21 Win 7             TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Firefox 22 Win 7             TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Firefox 24.2.0 ESR Win 7     TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Firefox 24 Win 7             TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Firefox 26 Win 8             TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Firefox 27 Win 8             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 29 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 30 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 31.3.0 ESR Win 7     TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 31 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 32 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 34 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 35 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 37 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 39 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 41 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 42 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 44 OS X              TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 45 Win 7             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 46 Win 7             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 47 Win 7             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 49 Win 7             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 49 XP SP3            TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Firefox 53 Win 7             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Firefox 59 Win 7             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Firefox 62 Win 7             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 IE 6 XP                      No connection
 IE 7 Vista                   TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 IE 8-10 Win 7                TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 IE 8 Win 7                   TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 IE 8 XP                      No connection
 IE 9 Win 7                   TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 IE 10 Win Phone 8.0          TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 IE 11 Win 7                  TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 IE 11 Win 8.1                TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 IE 11 Win Phone 8.1          TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 IE 11 Win Phone 8.1 Update   TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 IE 11 Win 10                 TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 IE 11 Win 10 Preview         TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Edge 12 Win 10               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Edge 13 Win 10               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Edge 13 Win Phone 10         TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Edge 15 Win 10               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Opera 12.15 Win 7            No connection
 Opera 15 Win 7               TLSv1.1 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Opera 16 Win 7               TLSv1.1 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Opera 17 Win 7               TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 5.1.9 OS X 10.6.8     TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 5 iOS 5.1.1           TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 6.0.4 OS X 10.8.4     TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 6 iOS 6.0.1           TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 7 iOS 7.1             TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 7 OS X 10.9           TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 8 iOS 8.0 Beta        TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 8 iOS 8.4             TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 8 OS X 10.10          TLSv1.2 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Safari 9 iOS 9               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Safari 9 OS X 10.11          TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Safari 10 iOS 10             TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Safari 10 OS X 10.12         TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Tor 17.0.9 Win 7             TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Apple ATS 9 iOS 9            TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Baidu Jan 2015               TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 BingBot Dec 2013             No connection
 BingPreview Dec 2013         No connection
 BingPreview Jun 2014         No connection
 BingPreview Jan 2015         TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Googlebot Oct 2013           TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Googlebot Jun 2014           TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Googlebot Feb 2015           TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Googlebot Feb 2018           TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 253 bit ECDH (X25519)
 Yahoo Slurp Oct 2013         TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Yahoo Slurp Jun 2014         No connection
 Yahoo Slurp Jan 2015         TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 YandexBot 3.0                No connection
 YandexBot May 2014           No connection
 YandexBot Sep 2014           TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 YandexBot Jan 2015           TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 6u45                    No connection
 Java 7u25                    TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
 Java 8b132                   TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 8u111                   TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 8u161                   TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 8u31                    TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 Java 9.0.4                   TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 OpenSSL 0.9.8y               No connection
 OpenSSL 1.0.1h               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 OpenSSL 1.0.1l               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
 OpenSSL 1.0.2e               TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)


Security HTTP Headers

HTTP Strict Transport Security (HSTS)   not offered (NOT ok)
Content Security Policy (CSP)           not offered (NOT ok)
X-Frame-Options                         offered (OK)
X-XSS-Protection                        not offered
X-Content-Type-Options                  not offered
Expect-CT                               not offered
Referrer Policy                         not offered
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                   offered (OK)
Content Encoding (Compression)          not offered

Raw HTTP Headers

HTTP/1.1 502 Bad Gateway
CF-RAY 65f15b64a9cb2b59-FRA
Cache-Control private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Connection keep-alive
Content-Type text/html; charset=UTF-8
Date Mon, 14 Jun 2021 06:03:42 GMT
Expires Thu, 01 Jan 1970 00:00:01 GMT
Server cloudflare
Set-Cookie cf_use_ob=443; path=/; expires=Mon, 14-Jun-21 06:04:12 GMT
X-Frame-Options SAMEORIGIN

Cleaned HTML

<!DOCTYPE html>
<html class="no-js" lang="en-US">
<head>
<meta charset="UTF-8" />
<meta http-equiv="refresh" content="0" />
<title>dnslookup.org | 502: Bad gateway</title>
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />
<meta name="robots" content="noindex, nofollow" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<link rel="stylesheet" id="cf_styles-css" href="/cdn-cgi/styles/main.css" type="text/css" media="screen,projection" />
</head>
<body>
<div id="cf-wrapper">
<div id="cf-error-details" class="p-0">
<header class="mx-auto pt-10 lg:pt-6 lg:px-8 w-240 lg:w-full mb-8">
<h1 class="inline-block sm:block sm:mb-2 font-light text-60 lg:text-4xl text-black-dark leading-tight mr-2"><span class="cf-error-type">Error</span> <span class="cf-error-code">502</span></h1>
<span class="inline-block sm:block font-mono text-15 lg:text-sm lg:leading-relaxed">Ray ID: 65f15b64a9cb2b59 •</span> <span class="inline-block sm:block font-mono text-15 lg:text-sm lg:leading-relaxed">2021-06-14 06:03:42 UTC</span>
<h2 class="text-gray-600 leading-1.3 text-3xl font-light">Bad gateway</h2>
</header>
<div class="my-8 bg-gradient-gray w-240 lg:w-full mx-auto clearfix md:px-8">
<div id="cf-browser-status" class="relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center">
<div class="relative mb-10 md:m-0"><span class="cf-icon-browser block md:hidden h-20 bg-center bg-no-repeat"></span> <span class="cf-icon-ok w-12 h-12 absolute left-1/2 md:left-auto md:right-0 md:top-0 -ml-6 -bottom-4"></span></div>
<span class="md:block w-full truncate">You</span>
<h3 class="md:inline-block mt-3 md:mt-0 text-2xl text-gray-600 font-light leading-1.3">Browser</h3>
<span class="leading-1.3 text-2xl text-green-success">Working</span></div>
<div id="cf-cloudflare-status" class="relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center">
<div class="relative mb-10 md:m-0"><span class="cf-icon-cloud block md:hidden h-20 bg-center bg-no-repeat"></span> <span class="cf-icon-ok w-12 h-12 absolute left-1/2 md:left-auto md:right-0 md:top-0 -ml-6 -bottom-4"></span></div>
<span class="md:block w-full truncate">Frankfurt</span>
<h3 class="md:inline-block mt-3 md:mt-0 text-2xl text-gray-600 font-light leading-1.3">Cloudflare</h3>
<span class="leading-1.3 text-2xl text-green-success">Working</span></div>
<div id="cf-host-status" class="cf-error-source relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center">
<div class="relative mb-10 md:m-0"><span class="cf-icon-server block md:hidden h-20 bg-center bg-no-repeat"></span> <span class="cf-icon-error w-12 h-12 absolute left-1/2 md:left-auto md:right-0 md:top-0 -ml-6 -bottom-4"></span></div>
<span class="md:block w-full truncate">dnslookup.org</span>
<h3 class="md:inline-block mt-3 md:mt-0 text-2xl text-gray-600 font-light leading-1.3">Host</h3>
<span class="leading-1.3 text-2xl text-red-error">Error</span></div>
</div>
<div class="w-240 lg:w-full mx-auto mb-8 lg:px-8 clearfix">
<div class="w-1/2 md:w-full float-left pr-6 md:pb-10 md:pr-0 leading-relaxed">
<h2 class="text-3xl font-normal leading-1.3 mb-4">What happened?</h2>
<p>The web server reported a bad gateway error.</p>
</div>
<div class="w-1/2 md:w-full float-left leading-relaxed">
<h2 class="text-3xl font-normal leading-1.3 mb-4">What can I do?</h2>
<p class="mb-6">Please try again in a few minutes.</p>
</div>
</div>
<div class="cf-error-footer cf-wrapper w-240 lg:w-full py-10 sm:py-4 sm:px-8 mx-auto text-center sm:text-left border-solid border-0 border-t border-gray-300">
<p class="text-13"><span class="cf-footer-item sm:block sm:mb-1">Cloudflare Ray ID: <strong class="font-semibold">65f15b64a9cb2b59</strong></span> <span class="cf-footer-separator sm:hidden">•</span> <span class="cf-footer-item sm:block sm:mb-1"><span>Your IP</span>: 87.106.157.195</span> <span class="cf-footer-separator sm:hidden">•</span> <span class="cf-footer-item sm:block sm:mb-1"><span>Performance & security by</span> <a rel="noopener noreferrer" href="https://www.cloudflare.com/5xx-error-landing" id="brand_link" target="_blank">Cloudflare</a></span></p>
</div>
</div>
</div>
</body>
</html>

Warnings Errors and Accessibility


Accessibility Checks:

line 7 column 1 - Access: [7.4.1.1]: remove auto-refresh.
line 7 column 1 - Access: [13.2.1.3]: Metadata missing (redirect/auto-refresh).
line 15 column 1 - Access: [6.1.1.1]: style sheets require testing (link).
line 96 column 94 - Access: [10.1.1.2]: new windows require warning (_blank).
line 11 column 1 - Warning: discarding unexpected <meta>
Info: Document content looks like HTML5
<HTMLYSE> found 1 warning and 0 errors!