SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cg-koeln-ost.de
SSL/TLS Certificate
SSL/TLS Certificate for cg-koeln-ost.de
Valid- Issued by (CA)
- Starfield Technologies, Inc.
- Subject
- www.cg-koeln-ost.de
- Valid from
- May 12, 2026
- Valid until
- Nov 26, 2026 (118 days remaining)
- Public key
- RSA 4096-bit
- Serial
- A2DD136378052D56
- SHA-256 fingerprint
- BC:12:EB:B5:13:0E:F6:08:22:F4:0A:F7:DD:5E:57:3C:C0:3F:51:8C:09:53:06:D4:58:DA:E2:4E:79:D7:22:45
- Chain
- Starfield Secure Certificate Authority - G2 → Starfield Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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TLS certificate
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