SSL/TLS Certificate Lookup

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

firstclaas.net

SSL/TLS Certificate

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SSL/TLS Certificate for firstclaas.net

Valid
Issued by (CA)
Asseco Data Systems S.A.
Subject
firstclaas.net
Valid from
May 20, 2026
Valid until
Dec 5, 2026 (137 days remaining)
Public key
RSA 4096-bit
Serial
016551928087632FA7F617CAAC700B2E
SHA-256 fingerprint
F1:05:F5:EC:BB:D2:4C:3F:7B:CC:E0:6F:4D:20:1E:4A:86:4F:B5:A9:A3:DB:54:1C:BD:22:09:C4:9F:AB:47:C2
Chain
Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
Subject Alternative Names (2)
firstclaas.net, www.firstclaas.net

Certificate Authority Authorization (CAA)

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