SSL/TLS Certificate Lookup

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

casteo.com

SSL/TLS Certificate

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SSL/TLS Certificate for casteo.com

Valid
Issued by (CA)
Sectigo Limited
Subject
casteo.com
Valid from
Oct 3, 2025
Valid until
Oct 31, 2026 (103 days remaining)
Public key
RSA 4096-bit
Serial
624EF06ABAAD659456100B4C3917EA01
SHA-256 fingerprint
39:29:25:3F:8E:98:19:42:87:B4:49:5C:99:FB:52:A7:D7:03:62:A5:42:5D:22:F0:E3:7A:77:9A:68:9C:0C:0F
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Subject Alternative Names (2)
casteo.com, www.casteo.com

Certificate Authority Authorization (CAA)

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