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

mailfilter.email · 202.74.68.130:443

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
2020-08-26T04:12:27+00:00
Expires
2021-08-26T04:12:27+00:00
Days remaining
-1873
Serial (hex)
5F45E12B
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

31:BE:AF:2E:DE:82:D0:60:13:F9:33:A8:C7:59:AF:12:CC:E3:96:A3:BA:B7:AF:D8:39:63:7C:D8:5A:A1:75:F1
Certificate extensions & PEM
extendedKeyUsage
TLS Web Server Authentication
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-11T06:43:10+00:00

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

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