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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

gcn.bg · 87.246.0.72:443

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=*.gcn.bg
Issuer
C=GB O=Sectigo Limited CN=Sectigo Public Server Authentication CA DV R36
Valid from
2026-03-08T00:00:00+00:00
Expires
2027-03-09T23:59:59+00:00
Days remaining
146
Serial (hex)
CC05BEB3ED7D222D7642378AF85169A5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.gcn.bg, DNS:gcn.bg

SHA-256 fingerprint

07:FC:08:34:5F:48:56:9E:BC:5C:25:C2:D0:BD:65:95:7E:A6:8D:6B:C2:E4:DA:1A:0A:0A:9F:C2:B4:03:2C:3E
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
AE:96:07:88:B6:30:ED:FA:F6:AF:1C:48:80:7B:76:91:C4:66:A8:C6
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:*.gcn.bg, DNS:gcn.bg
ct_precert_scts
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 : Mar 8 19:45:58.885 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:A4:24:BE:35:FD:C3:0A:6F:BE:BA:0E: 93:D1:6B:4E:99:5E:19:1F:8B:F6:3F:AD:68:CC:0A:89: ED:2D:6A:35:50:02:21:00:93:DF:B1:4B:52:B1:ED:FB: EE:3C:50:33:60:9B:2B:7A:6A:7F:37:8D:AA:41:F6:A0: A8:0B:3F:2F:C6:D9:25:DC Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Mar 8 19:45:58.774 2026 GMT Extensions: 00:00:05:00:03:0C:FB:85 Signature : ecdsa-with-SHA256 30:45:02:20:02:7E:94:16:8D:4D:EF:F5:F9:FE:EF:36: 5E:62:72:FE:C7:04:02:63:FA:AB:0C:D7:19:4B:8A:B2: AB:17:88:40:02:21:00:E3:49:D2:9D:A5:07:D6:1F:B8: C5:71:3D:88:C1:D3:31:71:50:F1:A7:84:C0:FC:B0:26: A3:1B:61:69:5A:4E:51 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 : Mar 8 19:45:58.833 2026 GMT Extensions: 00:00:05:00:00:33:D5:EB Signature : ecdsa-with-SHA256 30:45:02:20:65:F8:A9:E6:8F:6D:60:CF:0A:31:70:A4: 56:7A:5C:CD:D0:46:0A:6D:D9:62:F6:93:F2:AE:0C:BB: 9F:9D:BF:3C:02:21:00:E5:8C:77:B9:01:95:5D:DA:8D: 0E:27:1D:A8:8A:EA:B3:D9:EF:B5:8B:DB:63:A8:8A:75: 66:8D:0F:B7:4D:F7:96
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-14T14:34:58+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=GB ST=Greater Manchester L=Salford O=Sectigo Limited CN=Sectigo RSA Domain 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
1539
Serial (hex)
7D5B5126B476BA11DB74160BBC530DA7
Signature
RSA-SHA384
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

7F:A4:FF:68:EC:04:A9:9D:75:28:D5:08:5F:94:90:7F:4D:1D:D1:C5:38:1B:AC:DC:83:2E:D5:C9:60:21:46:76
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
8D:8C:5E:C4:54:AD:8A:E1:77:E9:9B:F9:9B:05:E1:B8:01:8D:61:E1
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: 2.23.140.1.2.1
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-----

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

View certificate JSON

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