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

TLSv1.3

acsalaska.com · 172.179.26.85:443

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

Certificate verification failed

Subject
C=US ST=Alaska L=Anchorage O=Alaska Communications LLC CN=*.acsalaska.com
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-09-22T00:00:00+00:00
Expires
2027-04-08T23:59:59+00:00
Days remaining
185
Serial (hex)
058D69E9E4667079AE51293F0FB57892
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.acsalaska.com, DNS:acsalaska.com

SHA-256 fingerprint

88:83:EA:69:32:99:1F:58:10:C8:D2:77:5E:43:E6:65:D5:B2:6C:4A:0D:E8:E6:69:03:CB:AA:7A:46:77:82:B7
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
A0:BD:ED:63:83:FE:20:03:8B:94:6A:06:3B:06:38:D2:5E:69:87:73
subjectAltName
DNS:*.acsalaska.com, DNS:acsalaska.com
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Sep 22 18:54:30.984 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:80:7D:B6:16:58:48:E6:9F:07:74:F4: CF:C3:95:AD:B9:9E:50:DB:59:D7:3F:C7:E9:8C:70:64: D9:E7:88:AC:F1:02:21:00:86:4B:46:E9:AB:E1:2A:29: 5F:24:FA:17:5C:64:F0:5C:12:4B:AE:35:0A:44:23:9D: 94:48:0B:7E:BD:2A:DC:E2 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Sep 22 18:54:30.995 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:0B:55:EA:1D:7C:AB:86:9F:38:8F:DA:27: 7A:2A:7B:B7:BF:D2:BA:48:E9:27:09:80:76:BB:36:7E: 80:36:04:D4:02:20:5A:B6:0A:E2:79:6D:DA:4E:41:CD: 58:1E:58:7D:3F:12:28:21:52:48:87:77:F9:21:B2:63: 34:FD:EF:47:CF:E4 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Sep 22 18:54:31.082 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:33:39:5B:69:61:2F:AE:B7:AB:02:24:3A: 78:F4:B5:8E:FF:D2:A3:D6:5E:1A:07:C4:46:F2:D2:CB: 71:93:AD:BF:02:20:7E:F1:10:C8:51:F1:45:43:1F:40: 47:BC:E8:B4:DD:BD:40:5D:71:1C:60:D8:38:37:C5:55: B9:16:4D:9F:AD:0D
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-05T02:41:42+00:00

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

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