SSL/TLS Certificate Lookup

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

sittauer.com

SSL/TLS Certificate

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SSL/TLS Certificate for sittauer.com

Valid
Issued by (CA)
Let's Encrypt
Subject
sittauer.com
Valid from
Jun 9, 2026
Valid until
Sep 7, 2026 (48 days remaining)
Public key
RSA 2048-bit
Serial
051A902739FA0431E243A68840CC0D625925
SHA-256 fingerprint
9D:1F:DF:36:62:33:8D:83:98:B9:71:D8:40:3A:F8:7B:F3:03:3A:D1:77:2E:E6:BA:FA:A0:FC:62:F3:84:D4:0B
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
*.sittauer.com, sittauer.com

Certificate Authority Authorization (CAA)

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