SSL Report:
www.c308.com
(144.24.38.206)
Assessed on: Sun, 08 Jun 2025 16:28:28 UTC
| Clear cache
Summary
0
20
40
60
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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. MORE INFO »
Certificate #1: RSA 4096 bits (SHA256withRSA)
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Server Key and Certificate #1
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| Subject |
c308.com
Fingerprint SHA256: 86701f21d19757e5644d8cd4427fea58610dad29999153f82b4aa8051bee139a Pin SHA256: e69/jYqgIbPQSypObVJ1YfzEQ3m97EexMY2YBvxnVB0= |
| Common names | c308.com |
| Alternative names | c308.com www.c308.com |
| Serial Number | 0696a11dc2736ca9249d16a12b2c1271293b |
| Valid from | Sat, 19 Apr 2025 21:04:36 UTC |
| Valid until | Fri, 18 Jul 2025 21:04:35 UTC (expires in 1 month and 9 days) |
| Key | RSA 4096 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 |
CRL, OCSP CRL: http://r10.c.lencr.org/60.crl OCSP: http://r10.o.lencr.org |
| Revocation status | Good (not revoked) |
| DNS CAA | No (more info) |
| Trusted | Yes
Mozilla Apple Android Java Windows |
Certification Paths |
Certificate #2: RSA 2048 bits (SHA256withRSA)
No SNI
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Additional Certificates (if supplied)
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| Certificates provided | 1 (866 bytes) |
| Chain issues | None |
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Certification Paths |
Configuration
| Protocols | |
| TLS 1.3 | Yes |
| TLS 1.2 | Yes* |
| TLS 1.1 | No |
| TLS 1.0 | No |
| SSL 3 | No |
| SSL 2 | No |
| (*) Experimental: Server negotiated using No-SNI | |
| Cipher Suites | ||
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# TLS 1.3 (suites in server-preferred order)
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TLS_AES_128_GCM_SHA256 (0x1301)
ECDH x25519 (eq. 3072 bits RSA) FS
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128 | |
TLS_AES_256_GCM_SHA384 (0x1302)
ECDH x25519 (eq. 3072 bits RSA) FS
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256 | |
TLS_CHACHA20_POLY1305_SHA256 (0x1303)
ECDH x25519 (eq. 3072 bits RSA) FS
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256P | |
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# TLS 1.2 (suites in server-preferred order)
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TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)
ECDH secp521r1 (eq. 15360 bits RSA) FS
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256 | |
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
ECDH secp521r1 (eq. 15360 bits RSA) FS
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128 | |
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
ECDH secp521r1 (eq. 15360 bits RSA) FS
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256 | |
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)
ECDH secp521r1 (eq. 15360 bits RSA) FS
WEAK
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128 | |
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)
ECDH secp521r1 (eq. 15360 bits RSA) FS
WEAK
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256 | |
| (P) This server prefers ChaCha20 suites with clients that don't have AES-NI (e.g., Android devices) | ||
| Handshake Simulation | |||
| Android 4.4.2 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp521r1 FS |
| Android 5.0.0 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp521r1 FS |
| Android 6.0 | RSA 4096 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 7.0 | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 ECDH x25519 FS |
| Android 8.0 | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_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 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp521r1 FS |
| Chrome 49 / XP SP3 | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Chrome 69 / Win 7 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_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 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 47 / Win 7 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 49 / XP SP3 | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 62 / Win 7 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_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 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| IE 11 / Win 7 R | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| IE 11 / Win 8.1 R | RSA 4096 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| IE 11 / Win Phone 8.1 R | RSA 4096 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| IE 11 / Win Phone 8.1 Update R | RSA 4096 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| IE 11 / Win 10 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Edge 15 / Win 10 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 16 / Win 10 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 18 / Win 10 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 13 / Win Phone 10 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Java 8u161 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_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 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp521r1 FS |
| OpenSSL 1.0.2s R | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| OpenSSL 1.1.0k R | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| OpenSSL 1.1.1c R | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 ECDH x25519 FS |
| Safari 6 / iOS 6.0.1 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 7 / iOS 7.1 R | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 7 / OS X 10.9 R | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 8 / iOS 8.4 R | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 8 / OS X 10.10 R | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 9 / iOS 9 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 9 / OS X 10.11 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 10 / iOS 10 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 10 / OS X 10.12 R | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_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 | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Yahoo Slurp Jan 2015 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp384r1 FS |
| YandexBot Jan 2015 | RSA 4096 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp521r1 FS |
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# Not simulated clients (Protocol mismatch)
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| Android 2.3.7 No SNI 2 |
Protocol mismatch (not simulated) |
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| Android 4.0.4 |
Protocol mismatch (not simulated) |
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| Android 4.1.1 |
Protocol mismatch (not simulated) |
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| Android 4.2.2 |
Protocol mismatch (not simulated) |
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| Android 4.3 |
Protocol mismatch (not simulated) |
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| Baidu Jan 2015 |
Protocol mismatch (not simulated) |
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| IE 6 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
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| IE 7 / Vista |
Protocol mismatch (not simulated) |
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| IE 8 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
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| IE 8-10 / Win 7 R |
Protocol mismatch (not simulated) |
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| IE 10 / Win Phone 8.0 |
Protocol mismatch (not simulated) |
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| Java 6u45 No SNI 2 |
Protocol mismatch (not simulated) |
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| Java 7u25 |
Protocol mismatch (not simulated) |
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| OpenSSL 0.9.8y |
Protocol mismatch (not simulated) |
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| Safari 5.1.9 / OS X 10.6.8 |
Protocol mismatch (not simulated) |
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| Safari 6.0.4 / OS X 10.8.4 R |
Protocol mismatch (not simulated) |
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| (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)
TLS 1.2 : 0xc013
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| GOLDENDOODLE | No (more info)
TLS 1.2 : 0xc013
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| OpenSSL 0-Length | No (more info)
TLS 1.2 : 0xc013
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| Sleeping POODLE | No (more info)
TLS 1.2 : 0xc013
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| 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 | No |
| Session resumption (caching) | No (IDs empty) |
| Session resumption (tickets) | Yes |
| OCSP stapling | No |
| Strict Transport Security (HSTS) | No |
| HSTS Preloading | Not in: 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 | secp256r1, secp384r1, secp521r1, x25519 (Server has no preference) |
| SSL 2 handshake compatibility | No |
| 0-RTT enabled | No |
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HTTP Requests
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1 https://www.c308.com/
(HTTP/1.1 301 Moved Permanently)
| 1 | |
| Content-Length | 303 | |
| Content-Type | text/html; charset=iso-8859-1 | |
| Date | Sun, 08 Jun 2025 16:27:31 GMT | |
| Location | https://c308.com/ | |
| Server | Apache/2.4.62 (Debian) | |
| Connection | close | |
| Miscellaneous | |
| Test date | Sun, 08 Jun 2025 16:27:10 UTC |
| Test duration | 78.830 seconds |
| HTTP status code | 301 |
| HTTP forwarding | https://c308.com |
| HTTP server signature | Apache/2.4.62 (Debian) |
| Server hostname | - |
SSL Report v2.4.0