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 res-publica.at

Valid
Issued by (CA)
Let's Encrypt
Subject
res-publica.at
Valid from
Jun 21, 2026
Valid until
Sep 19, 2026 (54 days remaining)
Public key
EC 256-bit
Serial
058033363A6E237B1A903F16BD6A9D5F07D7
SHA-256 fingerprint
B1:C9:0C:E7:30:49:8D:9B:30:EC:19:35:AE:DC:10:2B:35:E5:46:22:E5:57:90:4A:AB:7F:1B:68:9E:D2:7D:D6
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
res-publica.at, www.res-publica.at

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).

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TLS certificate

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