DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.2

suddenlink.net · 167.206.12.60:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed
The certificate has expired.

Certificate verification failed

Subject
C=US ST=New York O=Altice USA, Inc. CN=www.suddenlink.net
Issuer
C=GB ST=Greater Manchester L=Salford O=Sectigo Limited CN=Sectigo RSA Organization Validation Secure Server CA
Valid from
2024-08-06T00:00:00+00:00
Expires
2025-08-06T23:59:59+00:00
Days remaining
-410
Serial (hex)
048050E04DB4B63BC19FD74E9405EF1B
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.suddenlink.net, DNS:account.suddenlink.net, DNS:home.suddenlink.net, DNS:suddenlink.net

SHA-256 fingerprint

8D:A0:B4:0E:70:4C:91:03:5A:66:07:DC:21:AF:E3:FA:27:6E:A9:36:AC:07:C2:A5:9D:D4:20:CC:B1:E2:47:58
Certificate extensions & PEM
authorityKeyIdentifier
17:D9:D6:25:27:67:F9:31:C2:49:43:D9:30:36:44:8C:6C:A9:4F:EB
subjectKeyIdentifier
7C:FF:70:C0:CE:24:7F:33:3C:5F:DE:3A:7F:36:83:63:E8:EE:8F:07
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.1.3.4 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoRSAOrganizationValidationSecureServerCA.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoRSAOrganizationValidationSecureServerCA.crt OCSP - URI:http://ocsp.sectigo.com
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : DD:DC:CA:34:95:D7:E1:16:05:E7:95:32:FA:C7:9F:F8: 3D:1C:50:DF:DB:00:3A:14:12:76:0A:2C:AC:BB:C8:2A Timestamp : Aug 6 03:35:21.013 2024 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:10:83:64:0D:F9:6F:C5:36:20:23:DD:6C: 3B:9C:60:E3:F6:5E:53:66:42:11:24:CC:64:BF:E5:F8: 0D:05:80:FD:02:21:00:BF:9C:6E:89:F6:5F:08:2B:A2: 60:30:A3:ED:CB:62:E5:EA:5A:2C:DD:AE:DD:A5:D3:9C: 0C:48:D5:60:7D:5B:04 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC: 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34 Timestamp : Aug 6 03:35:20.950 2024 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:5E:E9:23:AF:40:AF:EA:88:AC:D7:68:91: 76:E4:21:9E:3E:66:00:0C:17:6A:8C:CD:CC:D8:7D:F3: 13:CB:C5:F9:02:21:00:A5:AE:94:21:03:C4:9C:33:0E: 68:BF:39:20:F7:B6:DF:37:D3:3E:7E:BA:3D:9D:61:7D: 41:AA:4E:5A:CC:5D:F9 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13: F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A Timestamp : Aug 6 03:35:20.909 2024 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C1:28:FC:A3:07:49:EC:A9:FD:98:4D: D2:AC:2A:3E:CE:57:56:29:08:F4:00:F1:CC:81:79:C9: 28:D3:D3:8E:5D:02:21:00:F1:EF:F1:22:7C:C2:73:40: D7:52:26:1A:75:6D:12:77:0B:66:C2:84:47:68:23:8F: 6A:1B:50:9A:D2:AA:FD:62
subjectAltName
DNS:www.suddenlink.net, DNS:account.suddenlink.net, DNS:home.suddenlink.net, DNS:suddenlink.net
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-20T04:11:23+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=GB ST=Greater Manchester L=Salford O=Sectigo Limited CN=Sectigo RSA Organization Validation Secure Server CA
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Valid from
2018-11-02T00:00:00+00:00
Expires
2030-12-31T23:59:59+00:00
Days remaining
1563
Serial (hex)
137D539CAA7C31A9A433701968847A8D
Signature
RSA-SHA384
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

72:A3:4A:C2:B4:24:AE:D3:F6:B0:B0:47:55:B8:8C:C0:27:DC:CC:80:6F:DD:B2:2B:4C:D7:C4:77:73:97:3E:C0
Certificate extensions & PEM
authorityKeyIdentifier
53:79:BF:5A:AA:2B:4A:CF:54:80:E1:D8:9B:C0:9D:F2:B2:03:66:CB
subjectKeyIdentifier
17:D9:D6:25:27:67:F9:31:C2:49:43:D9:30:36:44:8C:6C:A9:4F:EB
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.usertrust.com/USERTrustRSACertificationAuthority.crl
authorityInfoAccess
CA Issuers - URI:http://crt.usertrust.com/USERTrustRSAAddTrustCA.crt OCSP - URI:http://ocsp.usertrust.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Issuer
C=GB ST=Greater Manchester L=Salford O=Comodo CA Limited CN=AAA Certificate Services
Valid from
2019-03-12T00:00:00+00:00
Expires
2028-12-31T23:59:59+00:00
Days remaining
833
Serial (hex)
3972443AF922B751D7D36C10DD313595
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

68:B9:C7:61:21:9A:5B:1F:01:31:78:44:74:66:5D:B6:1B:BD:B1:09:E0:0F:05:CA:9F:74:24:4E:E5:F5:F5:2B
Certificate extensions & PEM
authorityKeyIdentifier
A0:11:0A:23:3E:96:F1:07:EC:E2:AF:29:EF:82:A5:7F:D0:30:A4:B4
subjectKeyIdentifier
53:79:BF:5A:AA:2B:4A:CF:54:80:E1:D8:9B:C0:9D:F2:B2:03:66:CB
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
certificatePolicies
Policy: X509v3 Any Policy
crlDistributionPoints
Full Name: URI:http://crl.comodoca.com/AAACertificateServices.crl
authorityInfoAccess
OCSP - URI:http://ocsp.comodoca.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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