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.icomisp.ru · 95.215.176.101:443

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

Certificate verification failed

Subject
O=CommuniGate Systems Customer OU=Trial/Testing CN= emailAddress=postmaster
Issuer
O=CommuniGate Systems, Inc. C=US ST=CA L=Richmond OU=CommuniGate Pro CN=communigate.com emailAddress=support@communigate.com
Valid from
1998-02-02T00:00:00+00:00
Expires
2028-02-02T00:00:00+00:00
Days remaining
487
Serial (hex)
1E61
Signature
RSA-SHA1
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

E6:08:4E:30:E6:16:B5:DA:B5:89:8B:37:79:65:7A:C6:49:46:28:57:91:82:71:12:BD:1B:2C:C8:89:BF:5F:76
Certificate extensions & PEM
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-02T13:26:25+00:00

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

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