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

apt.no · 188.94.216.70:443

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
C=NO ST=Oslo L=Oslo O=Teknograd AS CN=wlb.teknograd.no emailAddress=support@teknograd.no
Issuer
C=NO ST=Oslo L=Oslo O=Teknograd AS CN=wlb.teknograd.no emailAddress=support@teknograd.no
Valid from
2019-09-16T10:35:16+00:00
Expires
2025-03-08T10:35:16+00:00
Days remaining
-572
Serial (hex)
BC384668B0F2A023
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

1E:A8:93:FF:CD:F0:B7:34:C1:EF:75:84:FF:D0:DA:8F:2B:A1:71:6F:21:87:AA:0C:18:77:93:A2:E7:68:C6:17
Certificate extensions & PEM
subjectKeyIdentifier
A7:00:C3:E3:E0:C4:C1:CA:3B:7F:50:A8:50:87:AD:90:EF:C8:06:FD
authorityKeyIdentifier
A7:00:C3:E3:E0:C4:C1:CA:3B:7F:50:A8:50:87:AD:90:EF:C8:06:FD
basicConstraints
CA:TRUE
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-01T06:48:29+00:00

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

View certificate JSON

Registration / WHOIS →DNS records →