SSL/TLS Certificate Lookup

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

dgi.koeln

SSL/TLS Certificate

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SSL/TLS Certificate for dgi.koeln

Hostname mismatch
Issued by (CA)
DigiCert Inc
Subject
*.dg-i.net
Valid from
Oct 21, 2025
Valid until
Nov 17, 2026 (119 days remaining)
Public key
RSA 4096-bit
Serial
02150B85892F8ADA4747E319727B3A01
SHA-256 fingerprint
9F:A9:D5:D4:52:D2:4F:8E:E4:A7:B9:15:6B:71:F3:73:CB:5B:72:E8:B3:83:C8:06:7B:FA:68:69:6D:1D:F5:AF
Chain
RapidSSL TLS RSA CA G1 → DigiCert Global Root G2
Subject Alternative Names (2)
*.dg-i.net, dg-i.net

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.