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 copas.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- copas.ch
- Valid from
- May 24, 2026
- Valid until
- Aug 22, 2026 (31 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06781C311FC9E2CB31940BD0EB075F52CBF2
- SHA-256 fingerprint
- D1:F8:F2:B9:28:1B:F9:00:08:52:41:B4:88:8A:06:9E:A6:CE:DA:AF:65:EB:B9:BB:5F:B2:B5:21:0C:46:F2:D0
- Chain
- R12 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.