SSL/TLS Certificate Lookup

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

stadt-frankfurt-am-main.org

SSL/TLS Certificate

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SSL/TLS Certificate for stadt-frankfurt-am-main.org

Valid
Issued by (CA)
Let's Encrypt
Subject
www.stadt-frankfurt-am-main.org
Valid from
Jun 23, 2026
Valid until
Sep 21, 2026 (63 days remaining)
Public key
EC 256-bit
Serial
05358B043D68384E0768C8A476647A8D94ED
SHA-256 fingerprint
40:DA:02:3D:6C:F4:02:4E:9E:82:2C:3C:10:C9:09:57:4A:04:4D:D4:0D:A0:C6:92:49:78:69:D5:51:70:D9:12
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
stadt-frankfurt-am-main.org, www.stadt-frankfurt-am-main.org

Certificate Authority Authorization (CAA)

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