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 oscom.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- oscom.ch
- Valid from
- Jul 11, 2026
- Valid until
- Oct 9, 2026 (79 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05787634121A312B7E0B078312A2DE42EA38
- SHA-256 fingerprint
- 31:EB:BC:46:5E:1A:1B:F1:75:C4:86:F1:40:46:0D:63:C9:62:27:1A:1C:73:34:3B:AF:5D:BB:93:A2:E2:51:E2
- 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.