SSL Report: twitter.com (172.66.0.227)
Assessed on:  Tue, 29 Apr 2025 06:57:23 UTC | HIDDEN | Clear cache
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Summary
Overall Rating
A+
0
20
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100
Certificate
 
Protocol Support
 
Key Exchange
 
Cipher Strength
 

Visit our documentation page for more information, configuration guides, and books. Known issues are documented here.
This site works only in browsers with SNI support.
This server supports TLS 1.3.
HTTP Strict Transport Security (HSTS) with long duration deployed on this server.  MORE INFO »
Certificate #1: EC 256 bits (SHA384withECDSA)
Server Key and Certificate #1
Subject twitter.com
Fingerprint SHA256: 28e247bc809b119ef7f31dd74259d72b3547de92429b6f87c7da1e4ada695e4e
Pin SHA256: zZdPWa/W0mTkHov/1ssni8A80iWbX2+pR2VILaAlNEE=
Common names twitter.com
Alternative names *.twitter.com cdn.syndication.twitter.com twitter.com
Serial Number 03cd06e3c508ee2a0ca56e893fbe5d403314
Valid from Thu, 06 Mar 2025 17:50:08 UTC
Valid until Wed, 04 Jun 2025 17:50:07 UTC (expires in 1 month and 5 days)
Key EC 256 bits
Weak key (Debian) No
Issuer E6
AIA: http://e6.i.lencr.org/
Signature algorithm SHA384withECDSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information OCSP
OCSP: http://e6.o.lencr.org
Revocation status Good (not revoked)
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (2052 bytes)
Chain issues None
#2
Subject E6
Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85
Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c=
Valid until Fri, 12 Mar 2027 23:59:59 UTC (expires in 1 year and 10 months)
Key EC 384 bits
Issuer ISRG Root X1
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: 28e247bc809b119ef7f31dd74259d72b3547de92429b6f87c7da1e4ada695e4e
Pin SHA256: zZdPWa/W0mTkHov/1ssni8A80iWbX2+pR2VILaAlNEE=
EC 256 bits / SHA384withECDSA
2 Sent by server E6
Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85
Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c=
EC 384 bits / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: 28e247bc809b119ef7f31dd74259d72b3547de92429b6f87c7da1e4ada695e4e
Pin SHA256: zZdPWa/W0mTkHov/1ssni8A80iWbX2+pR2VILaAlNEE=
EC 256 bits / SHA384withECDSA
2 Sent by server E6
Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85
Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c=
EC 384 bits / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: 28e247bc809b119ef7f31dd74259d72b3547de92429b6f87c7da1e4ada695e4e
Pin SHA256: zZdPWa/W0mTkHov/1ssni8A80iWbX2+pR2VILaAlNEE=
EC 256 bits / SHA384withECDSA
2 Sent by server E6
Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85
Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c=
EC 384 bits / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: 28e247bc809b119ef7f31dd74259d72b3547de92429b6f87c7da1e4ada695e4e
Pin SHA256: zZdPWa/W0mTkHov/1ssni8A80iWbX2+pR2VILaAlNEE=
EC 256 bits / SHA384withECDSA
2 Sent by server E6
Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85
Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c=
EC 384 bits / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: 28e247bc809b119ef7f31dd74259d72b3547de92429b6f87c7da1e4ada695e4e
Pin SHA256: zZdPWa/W0mTkHov/1ssni8A80iWbX2+pR2VILaAlNEE=
EC 256 bits / SHA384withECDSA
2 Sent by server E6
Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85
Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c=
EC 384 bits / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA

Click here to expand

Certificate #2: RSA 2048 bits (SHA256withRSA)
Server Key and Certificate #1
Subject twitter.com
Fingerprint SHA256: a96eae6c92cb5fb4da307c9fb10fb818a82808f900cae533c8f27b2147e7ff54
Pin SHA256: E4qtG5xbj887Lihx74fnKdKYG1S0sTCPl+5CNqh7CHo=
Common names twitter.com
Alternative names *.twitter.com cdn.syndication.twitter.com twitter.com
Serial Number 0337815029b90dcf1841123aa9ecaa72f5c0
Valid from Thu, 06 Mar 2025 17:49:59 UTC
Valid until Wed, 04 Jun 2025 17:49:58 UTC (expires in 1 month and 5 days)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer R10
AIA: http://r10.i.lencr.org/
Signature algorithm SHA256withRSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information OCSP
OCSP: http://r10.o.lencr.org
Revocation status Good (not revoked)
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (2592 bytes)
Chain issues None
#2
Subject R10
Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3
Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo=
Valid until Fri, 12 Mar 2027 23:59:59 UTC (expires in 1 year and 10 months)
Key RSA 2048 bits (e 65537)
Issuer ISRG Root X1
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: a96eae6c92cb5fb4da307c9fb10fb818a82808f900cae533c8f27b2147e7ff54
Pin SHA256: E4qtG5xbj887Lihx74fnKdKYG1S0sTCPl+5CNqh7CHo=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server R10
Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3
Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: a96eae6c92cb5fb4da307c9fb10fb818a82808f900cae533c8f27b2147e7ff54
Pin SHA256: E4qtG5xbj887Lihx74fnKdKYG1S0sTCPl+5CNqh7CHo=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server R10
Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3
Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: a96eae6c92cb5fb4da307c9fb10fb818a82808f900cae533c8f27b2147e7ff54
Pin SHA256: E4qtG5xbj887Lihx74fnKdKYG1S0sTCPl+5CNqh7CHo=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server R10
Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3
Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: a96eae6c92cb5fb4da307c9fb10fb818a82808f900cae533c8f27b2147e7ff54
Pin SHA256: E4qtG5xbj887Lihx74fnKdKYG1S0sTCPl+5CNqh7CHo=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server R10
Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3
Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server twitter.com
Fingerprint SHA256: a96eae6c92cb5fb4da307c9fb10fb818a82808f900cae533c8f27b2147e7ff54
Pin SHA256: E4qtG5xbj887Lihx74fnKdKYG1S0sTCPl+5CNqh7CHo=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server R10
Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3
Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=
RSA 4096 bits (e 65537) / SHA256withRSA

Click here to expand

Configuration
Protocols
TLS 1.3 Yes
TLS 1.2 Yes
TLS 1.1 No
TLS 1.0 No
SSL 3 No
SSL 2 No


Cipher Suites
# TLS 1.3 (server has no preference)
TLS_AES_128_GCM_SHA256 (0x1301)   ECDH x25519 (eq. 3072 bits RSA)   FS 128
TLS_AES_256_GCM_SHA384 (0x1302)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_CHACHA20_POLY1305_SHA256 (0x1303)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
# TLS 1.2 (suites in server-preferred order)
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 (0xc02b)   ECDH x25519 (eq. 3072 bits RSA)   FS 128
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (0xc02c)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca9)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)   ECDH x25519 (eq. 3072 bits RSA)   FS 128
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)   ECDH x25519 (eq. 3072 bits RSA)   FS 256


Handshake Simulation
Android 4.4.2 EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 5.0.0 EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 6.0 EC 256 (SHA384)   TLS 1.2 > http/1.1   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 7.0 EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
Android 8.0 EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
Android 8.1 -   TLS 1.3 TLS_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Android 9.0 -   TLS 1.3 TLS_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
BingPreview Jan 2015 EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 49 / XP SP3 RSA 2048 (SHA256)   TLS 1.2 > h2   TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 69 / Win 7  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
Chrome 70 / Win 10 -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH x25519  FS
Chrome 80 / Win 10  R -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH x25519  FS
Firefox 31.3.0 ESR / Win 7 EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 47 / Win 7  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 49 / XP SP3 EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 62 / Win 7  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
Firefox 73 / Win 10  R -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH x25519  FS
Googlebot Feb 2018 EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
IE 11 / Win 7  R EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
IE 11 / Win 8.1  R EC 256 (SHA384)   TLS 1.2 > http/1.1   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
IE 11 / Win Phone 8.1  R EC 256 (SHA384)   TLS 1.2 > http/1.1   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
IE 11 / Win Phone 8.1 Update  R EC 256 (SHA384)   TLS 1.2 > http/1.1   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
IE 11 / Win 10  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Edge 15 / Win 10  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
Edge 16 / Win 10  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
Edge 18 / Win 10  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
Edge 13 / Win Phone 10  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Java 8u161 EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Java 11.0.3 -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH secp256r1  FS
Java 12.0.1 -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH secp256r1  FS
OpenSSL 1.0.1l  R EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
OpenSSL 1.0.2s  R EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
OpenSSL 1.1.0k  R EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH x25519  FS
OpenSSL 1.1.1c  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Safari 6 / iOS 6.0.1 Server sent fatal alert: handshake_failure
Safari 7 / iOS 7.1  R Server sent fatal alert: handshake_failure
Safari 7 / OS X 10.9  R Server sent fatal alert: handshake_failure
Safari 8 / iOS 8.4  R Server sent fatal alert: handshake_failure
Safari 8 / OS X 10.10  R Server sent fatal alert: handshake_failure
Safari 9 / iOS 9  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 9 / OS X 10.11  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 10 / iOS 10  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 10 / OS X 10.12  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 12.1.2 / MacOS 10.14.6 Beta  R -   TLS 1.3 TLS_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Safari 12.1.1 / iOS 12.3.1  R -   TLS 1.3 TLS_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Apple ATS 9 / iOS 9  R EC 256 (SHA384)   TLS 1.2 > h2   TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Yahoo Slurp Jan 2015 EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
YandexBot Jan 2015 EC 256 (SHA384)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
# Not simulated clients (Protocol mismatch)
Android 2.3.7   No SNI 2 Protocol mismatch (not simulated)
Android 4.0.4 Protocol mismatch (not simulated)
Android 4.1.1 Protocol mismatch (not simulated)
Android 4.2.2 Protocol mismatch (not simulated)
Android 4.3 Protocol mismatch (not simulated)
Baidu Jan 2015 Protocol mismatch (not simulated)
IE 6 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)
IE 7 / Vista Protocol mismatch (not simulated)
IE 8 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)
IE 8-10 / Win 7  R Protocol mismatch (not simulated)
IE 10 / Win Phone 8.0 Protocol mismatch (not simulated)
Java 6u45   No SNI 2 Protocol mismatch (not simulated)
Java 7u25 Protocol mismatch (not simulated)
OpenSSL 0.9.8y Protocol mismatch (not simulated)
Safari 5.1.9 / OS X 10.6.8 Protocol mismatch (not simulated)
Safari 6.0.4 / OS X 10.8.4  R Protocol mismatch (not simulated)

Click here to expand

(1) Clients that do not support Forward Secrecy (FS) are excluded when determining support for it.
(2) No support for virtual SSL hosting (SNI). Connects to the default site if the server uses SNI.
(3) Only first connection attempt simulated. Browsers sometimes retry with a lower protocol version.
(R) Denotes a reference browser or client, with which we expect better effective security.
(All) We use defaults, but some platforms do not use their best protocols and features (e.g., Java 6 & 7, older IE).
(All) Certificate trust is not checked in handshake simulation, we only perform TLS handshake.


Protocol Details
Secure Renegotiation Supported
Secure Client-Initiated Renegotiation No
Insecure Client-Initiated Renegotiation No
BEAST attack Mitigated server-side (more info)  
POODLE (SSLv3) No, SSL 3 not supported (more info)
POODLE (TLS) No (more info)
Zombie POODLE No (more info)  
GOLDENDOODLE No (more info)  
OpenSSL 0-Length No (more info)  
Sleeping POODLE No (more info)  
Downgrade attack prevention Yes, TLS_FALLBACK_SCSV supported (more info)
SSL/TLS compression No
RC4 No
Heartbeat (extension) No
Heartbleed (vulnerability) No (more info)
Ticketbleed (vulnerability) No (more info)
OpenSSL CCS vuln. (CVE-2014-0224) No (more info)
OpenSSL Padding Oracle vuln.
(CVE-2016-2107)		 No (more info)
ROBOT (vulnerability) No (more info)
Forward Secrecy Yes (with most browsers)   ROBUST (more info)
ALPN Yes   h2 http/1.1
NPN Yes   h2 http/1.1
Session resumption (caching) No (IDs assigned but not accepted)
Session resumption (tickets) Yes
OCSP stapling Yes
Strict Transport Security (HSTS) Yes
max-age=631138519
HSTS Preloading Chrome  Edge  Firefox  IE   
Public Key Pinning (HPKP) No (more info)
Public Key Pinning Report-Only No
Public Key Pinning (Static) No (more info)
Long handshake intolerance No
TLS extension intolerance No
TLS version intolerance No
Incorrect SNI alerts No
Uses common DH primes No, DHE suites not supported
DH public server param (Ys) reuse No, DHE suites not supported
ECDH public server param reuse No
Supported Named Groups x25519, secp256r1, secp384r1, secp521r1 (server preferred order)
SSL 2 handshake compatibility No
0-RTT enabled No


HTTP Requests
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1
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Miscellaneous
Test date Tue, 29 Apr 2025 06:56:36 UTC
Test duration 47.541 seconds
HTTP status code 302
HTTP forwarding https://x.com
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Server hostname -


SSL Report v2.3.1