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

ns-03.t-w.dev · 2a0e:b107:27d0:2::3:443

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=CH L=Schaffhausen O=Plesk CN=Plesk emailAddress=info@plesk.com
Issuer
C=CH L=Schaffhausen O=Plesk CN=Plesk emailAddress=info@plesk.com
Valid from
2024-04-15T17:13:50+00:00
Expires
2025-04-15T17:13:50+00:00
Days remaining
-541
Serial (hex)
661D604E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

A7:B9:9B:61:61:23:3A:3B:93:F5:72:9D:AD:1F:3F:50:2C:98:E3:33:EA:1F:5A:F3:F0:E9:E3:B2:79:82:EE:63
Certificate extensions & PEM
extendedKeyUsage
TLS Web Server Authentication
subjectKeyIdentifier
84:2C:A8:F5:D4:25:AA:C2:7C:94:E3:C5:48:05:28:BF:6E:86:CF:41
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-08T16:19:19+00:00

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

View certificate JSON

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