SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

optpartner.ru

SSL/TLS Certificate

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

SSL/TLS Certificate for optpartner.ru

Valid
Issued by (CA)
Let's Encrypt
Subject
optpartner.ru
Valid from
Jun 3, 2026
Valid until
Sep 1, 2026 (41 days remaining)
Public key
RSA 2048-bit
Serial
05DF11FE706D790CE1C7343DB19914EC82D3
SHA-256 fingerprint
06:60:87:46:E1:31:CA:5D:D5:B7:42:B2:EF:AD:AA:58:0C:AF:D1:63:52:DD:C2:81:93:A7:E2:13:7B:38:C7:F2
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
optpartner.ru, www.optpartner.ru

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

This certificate has been served since Jul 21, 2026.