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

dns1.comtegra.pl · 77.252.124.18:443

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=PL ST=Województwo mazowieckie L=WARSZAWA O="COMTEGRA" SA CN=*.comtegra.pl
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Valid from
2025-12-23T00:00:00+00:00
Expires
2027-01-15T23:59:59+00:00
Days remaining
99
Serial (hex)
059E958EC7EFB6B33ED84F06B20A207A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.comtegra.pl, DNS:comtegra.pl

SHA-256 fingerprint

E8:8B:AE:A2:D4:55:59:F8:87:6C:C5:56:DF:95:E1:68:24:1E:88:25:97:3A:5C:F9:26:1C:08:D5:B8:E1:60:0B
Certificate extensions & PEM
authorityKeyIdentifier
94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
7A:6E:94:9C:DE:BF:57:2C:82:87:26:19:DD:38:EA:0C:57:48:AC:F0
subjectAltName
DNS:*.comtegra.pl, DNS:comtegra.pl
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.geotrust.com CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.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 : Dec 23 11:57:40.013 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:D5:20:42:CF:D2:96:01:00:C6:08:D8: 59:65:4A:8F:99:52:95:EE:CC:9F:28:A2:A1:C4:FE:E4: 4F:02:55:40:23:02:20:7D:DB:B7:B5:E1:A3:60:BC:0A: FF:F1:70:0B:E0:2D:A7:3C:D1:DF:8F:5C:BF:29:93:79: B2:0F:C4:33:AA:E2:0B 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 : Dec 23 11:57:39.952 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:40:C8:1F:67:C7:4B:9C:53:36:BF:34:62: A8:F3:E6:3A:5A:68:5F:11:21:70:14:17:BC:40:68:6E: 1B:69:38:80:02:20:7F:4D:E7:96:57:0B:2C:65:AD:E0: 87:C6:A7:E6:38:20:EF:29:CF:CF:3F:76:F1:F8:87:C6: 6F:5B:7D:FB:96:28 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Dec 23 11:57:40.196 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:3E:A2:7C:3A:81:C3:89:A2:04:8B:D7:3C: B6:B4:15:12:D8:FE:9F:58:F1:E8:01:B3:52:C3:95:F7: E5:9E:38:6F:02:21:00:CB:05:79:59:69:5C:6E:95:CB: DB:50:3A:35:54:C6:21:E9:4D:56:AE:B8:95:92:60:97: 07:A1:5D:F5:E3:CE:E0
-----BEGIN CERTIFICATE-----
MIIGgTCCBWmgAwIBAgIQBZ6VjsfvtrM+2E8GsgogejANBgkqhkiG9w0BAQsFADBg
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-08T05:15:44+00:00

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

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