www.markmonitor.com
IPv6: no public AAAA record — the domain is reachable over IPv4 only.
All 4 endpoints share identical configuration Select an IP for owner, ASN & location
A+ 108.156.39.10 IPv4 WHOIS › A+ 108.156.39.26 IPv4 WHOIS › A+ 108.156.39.40 IPv4 WHOIS › A+ 108.156.39.49 IPv4 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 SecP256r1MLKEM768 x25519 secp256r1 secp384r1 (server preference order) |
| Post-Quantum Key Exchange | Yes X25519MLKEM768, SecP256r1MLKEM768 |
| HTTP/3 (QUIC) | No |
| Encrypted Client Hello | No |
| Security Features | |
| Forward Secrecy | Yes (ECDHE / DHE) |
| Scan Coverage | Incomplete no answer in time for: key exchange groups — shown as unknown, not as unsupported |
| Downgrade Prevention | Yes (legacy TLS disabled) |
| Secure Renegotiation | Supported (RFC 5746) |
| Extended Master Secret | Yes (RFC 7627) |
| OCSP Stapling | Yes |
| 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_AES_128_GCM_SHA256 | 0xC02F | ECDHE | FS | 128 | Secure |
| TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 | 0xC030 | ECDHE | FS | 256 | Secure |
| TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 | 0xCCA8 | 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_AES_128_GCM_SHA256 | Success |
| Chrome 49 / XP SP3 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | Success |
| IE 11 / Win 10 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | Success |
| IE 11 / Win 7 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | Success |
| Android 9.0 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | Success |
| Android 7.0 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | Success |
| Android 5.0 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | Success |
| Android 4.4.2 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | Success |
| Java 11 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 | Success |
| Java 8u121 | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_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 | www.markmonitor.com |
| Alt Names | www.markmonitor.com markmonitor.com |
| Issuer | CN=DigiCert EV RSA CA G2, O=DigiCert Inc, C=US |
| Validity | 2026-05-15 to 2026-11-29 (18 days remaining) |
| Key | RSA 2048 bits (sha256RSA) |
| Serial Number | 06B3DF8AED36A3C9DD54AF3B46599DE5 |
| SHA256 Fingerprint | c8b09fb51b45d28efd2acd3e643eac07144edbc406abcdf7ff340a21308084e4 |
| Pin SHA256 | S09evC3wXMhG0Krt6dYDZh4NjAGEAxsk6NyPjpesJ2k= |
Certificate Properties
| Type | EV |
| Cert Transparency | Yes (SCT) |
| OCSP Must Staple | No |
| Revocation | Good (not revoked) OCSP: http://ocsp.digicert.com CRL: http://crl3.digicert.com/DigiCertEVRSACAG2.crl |
| DNS CAA | Yes (configured) 0 issue "digicert.com" |
| Trusted By | Yes Mozilla · Apple · Android · Java · Windows |
| Name Match | Yes |
| Validity Period | 199 days (maximum 200 days for certificates issued then) |
| Chain Issues | None |
Trust Chain Architecture
End-Entity Certificate
CN=www.markmonitor.com, O=MarkMonitor Inc., L=Meridian, S=Idaho, C=US, SERIALNUMBER=3057220, businessCategory=Private Organization, jurisdictionStateOrProvinceName=Delaware, jurisdictionCountryName=US (Issuer: CN=DigiCert EV RSA CA G2, O=DigiCert Inc, C=US)
Intermediate CA
CN=DigiCert EV RSA CA G2, O=DigiCert Inc, C=US (Issuer: CN=DigiCert Global Root G2, OU=www.digicert.com, O=DigiCert Inc, C=US)
Root Certificate
CN=DigiCert Global Root G2, OU=www.digicert.com, O=DigiCert Inc, C=US (Issuer: CN=DigiCert Global Root G2, OU=www.digicert.com, O=DigiCert Inc, C=US)
TLS History & Relations
Everything our scans have seen for www.markmonitor.com, first seen 2026-09-30; current certificate since 2026-10-01.
Certificates served
| Certificate (SHA-256) | Issuer | Valid | Served |
|---|---|---|---|
| c8b09fb51b45d28e… current | DigiCert EV RSA CA G2 | 2026-05-15 → 2026-11-29 | 2026-10-01 |
Addresses
| Address | Certificate | Seen |
|---|---|---|
| 108.156.39.10 | c8b09fb51b45d28e… | 2026-10-01 |
| 108.156.39.26 | c8b09fb51b45d28e… | 2026-10-01 |
| 108.156.39.40 | c8b09fb51b45d28e… | 2026-10-01 |
| 108.156.39.49 | c8b09fb51b45d28e… | 2026-10-01 |
TLS history (a row per change; repeated checks only extend it)
| Since → last checked (UTC) | Grade | TLS | Certificates | Addresses |
|---|---|---|---|---|
| 2026-10-01 11:01 | A+ | TLS 1.3 | c8b09fb51b45d28e… | 108.156.39.10, 108.156.39.26, 108.156.39.40, 108.156.39.49 |