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 iserv-dohnser.de

Valid
Issued by (CA)
Let's Encrypt
Subject
iserv-dohnser.de
Valid from
Jul 9, 2026
Valid until
Oct 7, 2026 (75 days remaining)
Public key
EC 256-bit
Serial
058B237F282E58E53E58D112E52A0370E81F
SHA-256 fingerprint
7B:D2:CA:49:3E:CD:80:CF:05:B5:31:C9:D0:8B:BC:BF:8B:42:D0:F9:FB:60:92:EA:DD:12:7B:FE:21:A8:0B:6C
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (4)
*.dohnserschule-alfeld.schulserver.de, *.iserv-dohnser.de, dohnserschule-alfeld.schulserver.de, iserv-dohnser.de

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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