SSL/TLS Certificate Lookup

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

SSL/TLS Certificate for omnio.cz

Valid
Issued by (CA)
Let's Encrypt
Subject
omnio.cz
Valid from
Jun 20, 2026
Valid until
Sep 18, 2026 (59 days remaining)
Public key
EC 384-bit
Serial
055E1857901493C211C7658CD85A0B5CD552
SHA-256 fingerprint
03:2E:1B:76:DD:FC:B6:DF:3F:35:37:91:EE:14:0F:8B:28:75:FF:24:F0:E3:64:A1:06:26:2E:27:E8:EF:0D:86
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (37)
alesi.omnio.cz, cms.omnio.cz, cms2.omnio.cz, cms3.omnio.cz, cms3dev.omnio.cz, cms4.omnio.cz, cms4demo01.omnio.cz, cms4dev.omnio.cz, cmsdev.omnio.cz, dav.omnio.cz, depo.omnio.cz, facebook.omnio.cz, interat.renault.pl.vhost.omnio.cz, ipad.omnio.cz, iphone.omnio.cz, is.omnio.cz, jira.omnio.cz, novinky.omnio.cz, omnio-mobile.com, omnio.cz, omniomobile.com, pf.omnio.cz, pimcore.omnio.cz, press.omnio.cz, rocket.omnio.cz, roundmail.omnio.cz, sql.omnio.cz, srvmaster1.omnio.cz, wiki-backend.omnio.cz, wiki.cms.omnio.cz, www.cms2.omnio.cz, www.iphone.omnio.cz, www.omnio-mobile.com, www.omnio.cz, www.omniomobile.com, www.rocket.omnio.cz, www.wiki-backend.omnio.cz

Certificate Authority Authorization (CAA)

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