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.starnet.network · 193.138.247.79:443

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
CN=kh-mail-starnet-srv0 O=STARNET TC LLC OU=main office L=Kharkov C=UA ST=Kharkovskaya obl.
Issuer
CN=kh-mail-starnet-srv0 O=STARNET TC LLC OU=main office L=Kharkov C=UA ST=Kharkovskaya obl.
Valid from
2018-09-24T14:16:56+00:00
Expires
2028-09-21T14:16:56+00:00
Days remaining
705
Serial (hex)
A2BF639A920007E6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

6D:58:E0:19:AE:09:5F:D2:49:6F:94:AA:30:B0:05:C9:87:4C:4B:E7:56:B5:1A:E3:B7:52:C2:99:2F:9B:1A:A2
Certificate extensions & PEM
1.3.6.1.4.1.10311.1.2.325
1
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-17T02:15:53+00:00

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

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