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 sems.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sems.ch
- Valid from
- Jun 11, 2026
- Valid until
- Sep 9, 2026 (50 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0581EFC6706D96AF7F1E275251F135CD258E
- SHA-256 fingerprint
- F5:DD:DF:C2:22:CF:6F:7B:41:1C:AA:33:AE:04:70:AC:10:DA:8F:65:6C:DC:FF:20:53:6D:24:E6:E0:70:E4:54
- 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.