SSL/TLS Certificate Lookup

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

it-security.se

SSL/TLS Certificate

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SSL/TLS Certificate for it-security.se

Valid

Issued by (CA): Let's Encrypt
Subject: mail.it-security.se
Valid from: Jul 3, 2026
Valid until: Oct 1, 2026 (72 days remaining)
Public key: RSA 2048-bit
Serial: 057215B6EABC38523D5E1DC00AA1EF69B726
SHA-256 fingerprint: 27:75:71:58:79:41:7C:00:61:0C:24:AF:77:17:6D:FA:86:EC:A6:07:21:A7:A6:8D:8A:93:01:B1:8C:DE:B8:B0
Chain: YR2 → Root YR → ISRG Root X1

Subject Alternative Names (7)

autoconfig.it-security.nu, autodiscover.it-security.nu, cpanel.it-security.nu, it-security.se, mail.it-security.se, www.it-security.nu, www.it-security.se

Certificate Authority Authorization (CAA)

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