A record via supplied IP "34.71.45.200"
rDNS (34.71.45.200): 200.45.71.34.bc.googleusercontent.com.
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 not offered -- downgraded
NPN/SPDY https (advertised)
ALPN/HTTP2 not 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]) offered (NOT 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-ECDSA-AES256-GCM-SHA384
ECDHE-ECDSA-AES256-SHA
ECDHE-ECDSA-CHACHA20-POLY1305
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 TLSv1.2
Negotiated cipher ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
Cipher order
TLSv1: ECDHE-ECDSA-RC4-SHA ECDHE-ECDSA-AES128-SHA
ECDHE-ECDSA-AES256-SHA
TLSv1.1: ECDHE-ECDSA-RC4-SHA ECDHE-ECDSA-AES128-SHA
ECDHE-ECDSA-AES256-SHA
TLSv1.2: ECDHE-ECDSA-CHACHA20-POLY1305 ECDHE-ECDSA-AES128-GCM-SHA256
ECDHE-ECDSA-AES256-GCM-SHA384 ECDHE-ECDSA-RC4-SHA
ECDHE-ECDSA-AES128-SHA ECDHE-ECDSA-AES128-SHA256
ECDHE-ECDSA-AES256-SHA
Server defaults (Server Hello)
TLS extensions (standard) "next protocol/#13172" "session ticket/#35"
"renegotiation info/#65281"
Session Ticket RFC 5077 hint (no lifetime advertised)
SSL Session ID support yes
Session Resumption Tickets: yes, ID: no
TLS clock skew Random values, no fingerprinting possible
Signature Algorithm SHA256 with RSA
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 0301424392AF55EE9FF3222525EE6ED3CCA3 / SHA1 1B018B0FFAAFA8924352E9972429B3A7C3F9AF34
SHA256 AF87063D122C3AD88E4A19242C77B90A120F6B81CA89C487958CDDD3199967BF
Common Name (CN) www.howsmyssl.com
subjectAltName (SAN) howsmyssl.com howsmytls.com www.howsmyssl.com
www.howsmytls.com
Issuer R3 (Let's Encrypt from US)
Trust (hostname) Ok via SAN (same w/o SNI)
Chain of trust NOT ok (expired)
EV cert (experimental) no
Certificate Validity (UTC) 66 >= 60 days (2022-04-06 03:09 --> 2022-07-05 03:09)
# of certificates provided 3
Certificate Revocation List --
OCSP URI http://r3.o.lencr.org
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 301 Moved Permanently, redirecting to "https://www.howsmyssl.com/"
HTTP clock skew +86 sec from localtime
Strict Transport Security 7304 days=631138519 s, includeSubDomains, preload
Public Key Pinning --
Server banner (no "Server" line in header, interesting!)
Application banner --
Cookie(s) (none issued at "/") -- maybe better try target URL of 30x
Security headers --
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)
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) VULNERABLE (NOT ok): ECDHE-ECDSA-RC4-SHA
Tested 364 ciphers, ordered by encryption strength
Hexcode Cipher Suite Name (OpenSSL) KeyExch. Encryption Bits Cipher Suite Name (RFC)
-----------------------------------------------------------------------------------------------------------------------------
xc02c ECDHE-ECDSA-AES256-GCM-SHA384 ECDH 256 AESGCM 256 TLS_ECDHE_ECDSA_WITH_AES_256_GCM_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
xc007 ECDHE-ECDSA-RC4-SHA ECDH 256 RC4 128 TLS_ECDHE_ECDSA_WITH_RC4_128_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
xc02c ECDHE-ECDSA-AES256-GCM-SHA384 ECDH 256 AESGCM 256 TLS_ECDHE_ECDSA_WITH_AES_256_GCM_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
xc007 ECDHE-ECDSA-RC4-SHA ECDH 256 RC4 128 TLS_ECDHE_ECDSA_WITH_RC4_128_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
xc007 ECDHE-ECDSA-RC4-SHA ECDH 256 RC4 128 TLS_ECDHE_ECDSA_WITH_RC4_128_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
xc007 ECDHE-ECDSA-RC4-SHA ECDH 256 RC4 128 TLS_ECDHE_ECDSA_WITH_RC4_128_SHA
SSLv3
SSLv2
Client simulations
Android 2.3.7 No connection
Android 4.0.4 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Android 4.1.1 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Android 4.2.2 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Android 4.3 TLSv1.0 ECDHE-ECDSA-RC4-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-AES128-GCM-SHA256, 256 bit ECDH (P-256)
Android 6.0 TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 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-RC4-SHA, 256 bit ECDH (P-256)
Chrome 28 Win 7 TLSv1.1 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Chrome 29 Win 7 TLSv1.1 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Chrome 30 Win 7 TLSv1.2 ECDHE-ECDSA-RC4-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-AES128-GCM-SHA256, 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-AES128-GCM-SHA256, 256 bit ECDH (P-256)
Chrome 36 Win 7 TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 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-CHACHA20-POLY1305, 256 bit ECDH (P-256)
Chrome 49 XP SP3 No connection
Chrome 50 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Chrome 51 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Chrome 57 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Chrome 65 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Chrome 69 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Chrome 70 Win 10 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Firefox 10.0.12 ESR Win 7 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Firefox 17.0.7 ESR Win 7 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Firefox 21 Fedora 19 No connection
Firefox 21 Win 7 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Firefox 22 Win 7 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Firefox 24.2.0 ESR Win 7 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Firefox 24 Win 7 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Firefox 26 Win 8 TLSv1.0 ECDHE-ECDSA-RC4-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-CHACHA20-POLY1305, 256 bit ECDH (P-256)
Firefox 49 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 256 bit ECDH (P-256)
Firefox 49 XP SP3 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 256 bit ECDH (P-256)
Firefox 53 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Firefox 59 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Firefox 62 Win 7 TLSv1.2 ECDHE-ECDSA-CHACHA20-POLY1305, 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-RC4-SHA, 256 bit ECDH (P-256)
Opera 16 Win 7 TLSv1.1 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Opera 17 Win 7 TLSv1.2 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 5.1.9 OS X 10.6.8 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 5 iOS 5.1.1 TLSv1.2 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 6.0.4 OS X 10.8.4 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 6 iOS 6.0.1 TLSv1.2 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 7 iOS 7.1 TLSv1.2 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 7 OS X 10.9 TLSv1.2 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 8 iOS 8.0 Beta TLSv1.2 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 8 iOS 8.4 TLSv1.2 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Safari 8 OS X 10.10 TLSv1.2 ECDHE-ECDSA-RC4-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-RC4-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-RC4-SHA, 256 bit ECDH (P-256)
BingBot Dec 2013 TLSv1.0 ECDHE-ECDSA-AES128-SHA, 256 bit ECDH (P-256)
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-RC4-SHA, 256 bit ECDH (P-256)
Googlebot Jun 2014 TLSv1.0 ECDHE-ECDSA-RC4-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-CHACHA20-POLY1305, 253 bit ECDH (X25519)
Yahoo Slurp Oct 2013 TLSv1.0 ECDHE-ECDSA-RC4-SHA, 256 bit ECDH (P-256)
Yahoo Slurp Jun 2014 TLSv1.2 ECDHE-ECDSA-AES128-GCM-SHA256, 256 bit ECDH (P-256)
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-RC4-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)