SSL/TLS Certificate Lookup

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

openbsd.amsterdam

SSL/TLS Certificate

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SSL/TLS Certificate for openbsd.amsterdam

Valid
Issued by (CA)
Let's Encrypt
Subject
openbsd.amsterdam
Valid from
Jun 28, 2026
Valid until
Sep 26, 2026 (67 days remaining)
Public key
EC 384-bit
Serial
055E859457C7E1F0A425A4DCFE8D6FD35A15
SHA-256 fingerprint
DC:0B:5D:03:DD:29:4F:88:78:A3:7F:C6:3F:65:A1:74:26:66:B0:25:18:A7:1F:47:96:1E:F7:13:55:23:B6:42
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (5)
obsda.ms, openbsd.amsterdam, w.obsda.ms, www.obsda.ms, www.openbsd.amsterdam

Certificate Authority Authorization (CAA)

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