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 catp.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- catp.ch
- Valid from
- Jun 23, 2026
- Valid until
- Sep 21, 2026 (62 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05CC04A144967C796828FDF8E10BCC5FF6DF
- SHA-256 fingerprint
- 44:5A:F2:EF:A1:FC:5D:E4:4E:E6:2E:E5:32:83:16:28:E8:6A:1C:34:1A:30:A4:D4:74:A2:96:E0:B9:29:74:33
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.