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

TLSv1.2

mail.whs.ee · 185.155.99.94:443

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=212.47.223.128
Issuer
CN=212.47.223.128
Valid from
2016-05-30T08:55:04+00:00
Expires
2026-05-28T08:55:04+00:00
Days remaining
-133
Serial (hex)
8796BC6636A5C050
Signature
RSA-SHA1
Public key
RSA 1024

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

6F:3A:6B:9D:1A:BB:E3:9B:B5:4F:DF:C1:C2:80:03:AD:4E:6B:E6:9F:7E:E2:7B:FF:4D:75:21:2B:76:FE:69:07
Certificate extensions & PEM
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-07T11:18:49+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 →