SSL Report:
researchhub.org
(34.54.192.65)
Assessed on: Sun, 26 Oct 2025 10:42:26 UTC
| Clear cache
Summary
0
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Certificate
Protocol Support
Key Exchange
Cipher Strength
Visit our documentation page
for more information, configuration guides, and books. Known issues are documented
here.
Server sent invalid/disabled HSTS policy. See below for further information. MORE INFO »
This site works only in browsers with SNI support.
This server supports TLS 1.3. MORE INFO »
Certificate #1: RSA 2048 bits (SHA256withRSA)
|
Server Key and Certificate #1
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|
| Subject |
researchhub.org
Fingerprint SHA256: f143ae3da6e9d7e08b6867e4a591c7c5bad0b3542526866c6e82b135260aebd6 Pin SHA256: vQH5kF3gi/EFGa2RLQcAtuD0oaQJxNrcn2kMVkC6ugY= |
| Common names | researchhub.org |
| Alternative names | researchhub.org |
| Serial Number | 0b1a3dad0d4049f1095e33d9e059ca96 |
| Valid from | Tue, 14 Oct 2025 21:40:44 UTC |
| Valid until | Mon, 12 Jan 2026 22:34:17 UTC (expires in 2 months and 17 days) |
| Key | RSA 2048 bits (e 65537) |
| Weak key (Debian) | No |
| Issuer | WR3
AIA: http://i.pki.goog/wr3.crt |
| Signature algorithm | SHA256withRSA |
| Extended Validation | No |
| Certificate Transparency | Yes (certificate) |
| OCSP Must Staple | No |
| Revocation information |
CRL, OCSP CRL: http://c.pki.goog/wr3/2U68xcxO-dE.crl OCSP: http://o.pki.goog/s/wr3/Cxo |
| Revocation status | Good (not revoked)
CRL ERROR: IOException occurred |
| DNS CAA | No (more info) |
| Trusted | Yes
Mozilla Apple Android Java Windows |
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 |
| Cipher Suites | ||
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# TLS 1.3 (server has no preference)
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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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256 | |
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# TLS 1.2 (suites in server-preferred order)
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TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
ECDH x25519 (eq. 3072 bits RSA) FS
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128 | |
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)
ECDH x25519 (eq. 3072 bits RSA) FS
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256P | |
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
ECDH x25519 (eq. 3072 bits RSA) FS
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256 | |
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)
ECDH x25519 (eq. 3072 bits RSA) FS
WEAK
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128 | |
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)
ECDH x25519 (eq. 3072 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 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 5.0.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 6.0 | RSA 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 7.0 | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 ECDH x25519 FS |
| Android 8.0 | RSA 2048 (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 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_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 | RSA 2048 (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 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 47 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 49 / XP SP3 | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 62 / Win 7 R | RSA 2048 (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 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| IE 11 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| IE 11 / Win 8.1 R | RSA 2048 (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 2048 (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 2048 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| IE 11 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Edge 15 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 16 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 18 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 13 / Win Phone 10 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Java 8u161 | RSA 2048 (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 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| OpenSSL 1.0.2s R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| OpenSSL 1.1.0k R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_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 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 7 / iOS 7.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 7 / OS X 10.9 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 8 / iOS 8.4 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 8 / OS X 10.10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA ECDH secp256r1 FS |
| Safari 9 / iOS 9 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 9 / OS X 10.11 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 10 / iOS 10 R | RSA 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 10 / OS X 10.12 R | RSA 2048 (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 2048 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Yahoo Slurp Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| YandexBot Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 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 | Yes grpc-exp h2 http/1.1 http/1.0 |
| Session resumption (caching) | No (IDs empty) |
| Session resumption (tickets) | Yes |
| OCSP stapling | No |
| Strict Transport Security (HSTS) | Disabled
max-age=0 |
| 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 | x25519, secp256r1 (server preferred order) |
| SSL 2 handshake compatibility | No |
| 0-RTT enabled | No |
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HTTP Requests
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|
1 https://researchhub.org/
(HTTP/1.1 200 OK)
| 1 | |
| date | Sun, 26 Oct 2025 10:41:49 GMT | |
| content-type | text/html; charset=utf-8 | |
| cf-ray | 994957e9fb9388a8-PHX | |
| x-fedora-school-id | 1577894 | |
| vary | Accept, Accept-Encoding | |
| cache-control | max-age=0, private, must-revalidate | |
| set-cookie | ahoy_visitor=ed5c5c3e-f73b-4247-9bd1-5ae761316249; path=/; expires=Tue, 26 Oct 2027 10:41:49 GMT; SameSite=Lax; secure | |
| set-cookie | ahoy_visit=2bdd40cd-8bb6-4435-8754-42bdc599caef; path=/; expires=Sun, 26 Oct 2025 14:41:49 GMT; SameSite=Lax; secure | |
| set-cookie | ahoy_track=true; path=/; SameSite=Lax; secure | |
| set-cookie | _afid=ed5c5c3e-f73b-4247-9bd1-5ae761316249; domain=.researchhub.org; path=/; expires=Mon, 26 Oct 2026 10:41:49 GMT; secure; SameSite=None | |
| set-cookie | aid=ed5c5c3e-f73b-4247-9bd1-5ae761316249; domain=.researchhub.org; path=/; expires=Mon, 26 Oct 2026 10:41:49 GMT; secure; SameSite=None | |
| set-cookie | site_preview=logged_out; path=/; SameSite=Lax; secure | |
| set-cookie | _session_id=f9b5d4a41bd74c5367155974d0538f43; path=/; expires=Tue, 25 Nov 2025 10:41:49 GMT; HttpOnly; SameSite=Lax; secure | |
| set-cookie | __cf_bm=0Kg.DJB.JlARoTvq9Y0I1_qxDfJ03YkH.3MiQTGphdk-1761475309-1.0.1.1-xLssDm0R41kk32kQQgo2iLGZCU_t2skFi.mf22_KWyKA4_wAIJuu0ZqojYPQPWJ6_Nd31.ktUfkdUznHqp7KuWSj1pAeurwVQtcbP30O2l8; path=/; expires=Sun, 26-Oct-25 11:11:49 GMT; domain=.teachable.com; HttpOnly; Secure; SameSite=None | |
| set-cookie | __cfruid=ae9ffff62e63233b846659eaf884d5c6f92bac7b-1761475309; path=/; domain=.teachable.com; HttpOnly; Secure; SameSite=None | |
| set-cookie | _cfuvid=SSi3uilcn2wWBgqC7wIsQePuihU6.5baWIKEyoaTXGM-1761475309344-0.0.1.1-604800000; path=/; domain=.teachable.com; HttpOnly; Secure; SameSite=None | |
| x-request-id | afd6bdc1-6b5e-4fec-8e4e-ff68af613475 | |
| x-runtime | 0.155039 | |
| strict-transport-security | max-age=0 | |
| x-frame-options | SAMEORIGIN | |
| x-content-type-options | nosniff | |
| x-xss-protection | 1; mode=block | |
| x-download-options | noopen | |
| x-permitted-cross-domain-policies | none | |
| referrer-policy | strict-origin-when-cross-origin | |
| cf-cache-status | DYNAMIC | |
| speculation-rules | "/cdn-cgi/speculation" | |
| server | cloudflare | |
| alt-svc | h3=":443"; ma=86400 | |
| via | 1.1 google | |
| x-gcp-cdn-cache-status | miss | |
| x-gcp-cdn-cache-id | PHX | |
| Alt-Svc | h3=":443"; ma=2592000,h3-29=":443"; ma=2592000 | |
| Connection | close | |
| Transfer-Encoding | chunked | |
| Miscellaneous | |
| Test date | Sun, 26 Oct 2025 10:41:41 UTC |
| Test duration | 44.891 seconds |
| HTTP status code | 200 |
| HTTP server signature | cloudflare |
| Server hostname | 65.192.54.34.bc.googleusercontent.com |
SSL Report v2.4.1