SSL/TLS Certificate Lookup

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

prefeitura.rio

SSL/TLS Certificate

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SSL/TLS Certificate for prefeitura.rio

Valid
Issued by (CA)
Let's Encrypt
Subject
prefeitura.rio
Valid from
Jul 17, 2026
Valid until
Oct 15, 2026 (86 days remaining)
Public key
RSA 4096-bit
Serial
05270612DA4853708AE3FE886BECCE1CC610
SHA-256 fingerprint
3A:3D:0C:11:2F:06:24:79:14:BA:AD:24:62:61:27:F6:46:56:4B:0A:46:4B:AB:E5:22:06:54:0C:D2:43:ED:FC
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
*.prefeitura.rio, prefeitura.rio

Certificate Authority Authorization (CAA)

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