americanornithology.org
Overall grade based on: IPv4: 1 of 1 complete · IPv6: 2 of 2 complete
All 3 endpoints share identical configuration Select an IP for owner, ASN & location
A+ 23.185.0.2 IPv4 WHOIS › A+ 2620:12a:8000::2 IPv6 WHOIS › A+ 2620:12a:8001::2 IPv6 WHOIS › Grade Breakdown
Protocol Support 95%
Key Exchange 90%
Cipher Strength 100%
Certificate 100%
Protocol Configuration
Supported Protocols
TLS 1.3
TLS 1.2
TLS 1.1
TLS 1.0
SSL 3
SSL 2
Negotiated Cipher
TLS_AES_128_GCM_SHA256
Protocol Details
| Connection | |
| ALPN | h2 http/1.1 |
| SNI Required | Yes |
| Supported Named Groups | X25519MLKEM768 x25519 secp256r1 secp384r1 (server preference order) |
| Post-Quantum Key Exchange | Yes X25519MLKEM768 |
| HTTP/3 (QUIC) | No |
| Encrypted Client Hello | No |
| Security Features | |
| Forward Secrecy | Yes (ECDHE / DHE) |
| Downgrade Prevention | Yes (legacy TLS disabled) |
| Secure Renegotiation | Supported (RFC 5746) |
| Extended Master Secret | Yes (RFC 7627) |
| OCSP Stapling | No (certificate has no OCSP responder) |
| HSTS | No |
| HSTS Preloading | N/A (HSTS not enabled) |
| Security Checks | |
| BEAST attack | Mitigated |
| POODLE (SSLv3) | No (SSL 3 not supported) |
| POODLE (TLS) | No |
| RC4 | No |
| SSL/TLS Compression | No (not supported by .NET TLS stack) |
| Heartbleed | Not tested |
Cipher Suite Analysis
| Cipher Suite | Hex | Key Exchange | FS | Bits | Strength |
|---|---|---|---|---|---|
| # TLS 1.3 | |||||
| TLS_AES_128_GCM_SHA256 | 0x1301 | ECDHE | FS | 128 | Secure |
| TLS_AES_256_GCM_SHA384 | 0x1302 | ECDHE | FS | 256 | Secure |
| TLS_CHACHA20_POLY1305_SHA256 | 0x1303 | ECDHE | FS | 256 | Secure |
| # TLS 1.2 | |||||
| TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | 0xCCA8 | ECDHE | FS | 256 | Secure |
| TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | 0xC02F | ECDHE | FS | 128 | Secure |
| TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 | 0xC030 | ECDHE | FS | 256 | Secure |
Handshake Simulation
| Client | Protocol | Cipher Suite | Result |
|---|---|---|---|
| Chrome 120 / Win 11 | TLS 1.3 | TLS_AES_256_GCM_SHA384 | Success |
| Chrome 80 / Win 10 | TLS 1.3 | TLS_AES_256_GCM_SHA384 | Success |
| Firefox 115 / Win 10 | TLS 1.3 | TLS_AES_256_GCM_SHA384 | Success |
| iOS 17 / Safari | TLS 1.3 | TLS_CHACHA20_POLY1305_SHA256 | Success |
| macOS 14 / Safari | TLS 1.3 | TLS_AES_256_GCM_SHA384 | Success |
| Android 14 | TLS 1.3 | TLS_AES_128_GCM_SHA256 | Success |
| Chrome 69 / Win 7 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| Chrome 49 / XP SP3 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| IE 11 / Win 10 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| IE 11 / Win 7 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| Android 9.0 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| Android 7.0 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| Android 5.0 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| Android 4.4.2 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| Java 11 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| Java 8u121 | TLS 1.2 | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | Success |
| Android 4.0.4 | - | - | No |
| Android 4.1.1 | - | - | No |
| Baidu Jan 2015 | - | - | No |
| Java 6 | - | - | No |
* Simulated based on server's supported protocols and cipher configuration.
Certificate Identity
| Common Name | americanornithology.org |
| Alt Names | americanornithology.org www.americanornithology.org |
| Issuer | CN=YR2, O=Let's Encrypt, C=US |
| Validity | 2026-08-17 to 2026-11-15 (19 days remaining) |
| Key | RSA 2048 bits (sha256RSA) |
| Serial Number | 063A9D7075F1BD7ECB65E439F88B5284D8AF |
| SHA256 Fingerprint | 69dee8562e9e89683d35483034f2d4187093a647e78e5f053b6036a5af5018e0 |
| Pin SHA256 | xJeS/6NFl7GBLoWTFMpC3grDLAA3ec7xFZZ9xsTa2Zc= |
Certificate Properties
| Type | DV |
| Cert Transparency | Yes (SCT) |
| OCSP Must Staple | No |
| Revocation | Good (not revoked) CRL: http://yr2.c.lencr.org/48.crl No OCSP responder — revocation is published via CRL only (as CA/B Forum rules now allow). |
| DNS CAA | No (missing) |
| Trusted By | Yes Mozilla · Apple · Android · Java · Windows |
| Name Match | Yes |
| Validity Period | 90 days (maximum 200 days for certificates issued then) |
| Chain Issues | None |
Trust Chain Architecture
End-Entity Certificate
CN=americanornithology.org (Issuer: CN=YR2, O=Let's Encrypt, C=US)
Intermediate CA
CN=YR2, O=Let's Encrypt, C=US (Issuer: CN=Root YR, O=ISRG, C=US)
Intermediate CA
CN=Root YR, O=ISRG, C=US (Issuer: CN=ISRG Root X1, O=Internet Security Research Group, C=US)
Root Certificate
CN=ISRG Root X1, O=Internet Security Research Group, C=US (Issuer: CN=ISRG Root X1, O=Internet Security Research Group, C=US)
TLS History & Relations
Everything our scans have seen for americanornithology.org, first seen 2026-10-10; current certificate since 2026-10-10.
Certificates served
| Certificate (SHA-256) | Issuer | Valid | Served |
|---|---|---|---|
| 69dee8562e9e8968… current | YR2 | 2026-08-17 → 2026-11-15 | 2026-10-10 |
Addresses
| Address | Certificate | Seen |
|---|---|---|
| 23.185.0.2 | 69dee8562e9e8968… | 2026-10-10 |
| 2620:12a:8000::2 | 69dee8562e9e8968… | 2026-10-10 |
| 2620:12a:8001::2 | 69dee8562e9e8968… | 2026-10-10 |
TLS history (a row per change; repeated checks only extend it)
| Since → last checked (UTC) | Grade | TLS | Certificates | Addresses |
|---|---|---|---|---|
| 2026-10-10 13:14 | A+ | TLS 1.3 | 69dee8562e9e8968… | 23.185.0.2, 2620:12a:8000::2, 2620:12a:8001::2 |
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