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THE CERTIFICATE BEHIND THE CONNECTION

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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

TLS

qomm.nl · 37.34.56.248:443

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
CN=*.123telcom.nl
Issuer
C=GB ST=Greater Manchester L=Salford O=Sectigo Limited CN=Sectigo RSA Domain Validation Secure Server CA
Valid from
2022-06-13T00:00:00+00:00
Expires
2023-07-09T23:59:59+00:00
Days remaining
-1197
Serial (hex)
28C8FE597654F34C15A043C07FD6870A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.123telcom.nl, DNS:123telcom.nl

SHA-256 fingerprint

85:34:1D:89:26:50:E0:AF:64:36:E0:2C:DB:EC:79:9B:C3:CE:67:FD:CA:E9:23:76:8E:F3:73:E7:F2:93:EA:2E
Certificate extensions & PEM
authorityKeyIdentifier
8D:8C:5E:C4:54:AD:8A:E1:77:E9:9B:F9:9B:05:E1:B8:01:8D:61:E1
subjectKeyIdentifier
EE:51:31:F0:DD:0E:DA:D2:45:63:4E:C6:AD:B1:D6:A4:2E:3E:4B:43
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/SectigoRSADomainValidationSecureServerCA.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:*.123telcom.nl, DNS:123telcom.nl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AD:F7:BE:FA:7C:FF:10:C8:8B:9D:3D:9C:1E:3E:18:6A: B4:67:29:5D:CF:B1:0C:24:CA:85:86:34:EB:DC:82:8A Timestamp : Jun 13 07:51:10.506 2022 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:60:AC:F4:C7:F9:94:7E:7B:C0:05:72:A9: C6:75:03:F4:75:07:A2:64:68:1A:76:F9:FB:30:11:95: C6:19:08:C7:02:20:6D:99:49:DA:4D:69:34:F4:76:0B: 10:4B:49:73:F0:F3:AD:78:AF:37:C9:11:F1:2F:4A:54: E9:C3:39:4F:E7:A9 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 7A:32:8C:54:D8:B7:2D:B6:20:EA:38:E0:52:1E:E9:84: 16:70:32:13:85:4D:3B:D2:2B:C1:3A:57:A3:52:EB:52 Timestamp : Jun 13 07:51:10.646 2022 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:73:D3:7C:F0:2D:BB:AA:2A:8B:E9:49:7B: 4C:75:4F:E0:98:93:DF:EC:14:08:34:4E:35:A9:67:DD: 5B:E6:89:42:02:21:00:E3:D5:66:74:43:D0:CE:6B:41: A3:B4:AA:AD:97:E6:24:37:8E:04:51:BC:5D:9C:47:DF: 73:E1:9D:53:3A:80:9F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : E8:3E:D0:DA:3E:F5:06:35:32:E7:57:28:BC:89:6B:C9: 03:D3:CB:D1:11:6B:EC:EB:69:E1:77:7D:6D:06:BD:6E Timestamp : Jun 13 07:51:10.406 2022 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:2D:B6:5D:ED:B4:30:DF:57:24:C2:A0:DE: 25:56:E4:B1:A0:64:CE:2A:F6:B2:6D:35:A7:00:1F:87: 2D:98:26:DB:02:20:59:17:0C:DF:FA:09:EB:C4:C8:B8: 1C:B9:9C:AA:CC:D0:29:50:39:6A:0C:61:C9:F7:03:D5: D1:4B:DA:6A:C3:B9
-----BEGIN CERTIFICATE-----
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/ZqDyvU=
-----END CERTIFICATE-----

Cipher: Unavailable · Checked 2026-10-18T01:42:10+00:00

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

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