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

masicek.com · 65.108.61.81:443

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
CN=*.masicek.com
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA DV R36
Valid from
2026-10-03T00:00:00+00:00
Expires
2027-04-19T23:59:59+00:00
Days remaining
163
Serial (hex)
3FF5645A912854EBAA732B96BF2D4DCD
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.masicek.com, DNS:masicek.com

SHA-256 fingerprint

A8:C6:C7:3A:8D:92:61:94:83:B0:34:F9:E8:8B:43:38:E0:23:5F:54:F9:B1:C7:5E:AD:C0:DA:6C:41:7A:CC:3D
Certificate extensions & PEM
authorityKeyIdentifier
68:C0:12:16:18:0E:AF:CE:F6:87:A6:32:57:A3:46:51:5D:CB:07:27
subjectKeyIdentifier
DF:96:7A:08:37:59:EB:88:AE:48:23:43:A4:5B:C6:F6:78:E3:5E:03
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.2.7 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.2.1
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoPublicServerAuthenticationCADVR36.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:*.masicek.com, DNS:masicek.com
ct_precert_scts
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 : Oct 3 19:43:14.180 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:20:5D:62:6B:D7:BB:83:38:92:8A:A3:6E: BC:89:6A:3C:CA:52:23:DC:70:86:C7:73:55:3D:81:34: DB:46:5E:C1:02:21:00:CD:F3:0E:D2:0A:E9:BD:B9:73: 39:C4:DB:08:B9:52:9E:C4:19:38:57:4D:C2:AA:89:AD: B8:AE:76:25:9C:44:C8 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:8D:D7:91:D1:CD:05:49:ED:B6:03:55:D6: 06:B6:4F:AD:30:DB:71:FE:78:8F:0F:C7:C8:FB:C4:B1 Timestamp : Oct 3 19:43:14.580 2026 GMT Extensions: 00:00:05:00:05:02:AC:FA Signature : ecdsa-with-SHA256 30:44:02:20:30:DE:91:AF:C9:EB:51:CE:9E:4F:6B:34: 6F:BF:7F:3E:19:E0:0C:BE:3D:2B:12:A1:B5:DA:6F:4E: 07:37:70:40:02:20:00:C7:12:19:95:39:6C:D6:18:43: 0B:39:EC:5A:70:FC:2D:D6:6C:B9:AC:A6:2A:AF:67:6A: C0:7E:47:C7:76:D0 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Oct 3 19:43:14.267 2026 GMT Extensions: 00:00:05:00:06:C0:02:CD Signature : ecdsa-with-SHA256 30:45:02:21:00:F7:90:94:60:11:F8:22:B4:61:78:3E: 83:F3:C9:09:48:A9:AA:7F:FB:1A:13:8A:9B:48:50:B4: F0:C2:9E:39:4E:02:20:36:88:F7:ED:D3:35:B6:78:37: DD:00:03:8F:02:4E:A1:16:14:BB:B9:22:C1:9F:9A:9D: B1:36:00:CE:A4:5D:A7
-----BEGIN CERTIFICATE-----
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OHljojPedlmMHcrtK7rmb/eunA==
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-07T10:58:16+00:00

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

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