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 ontec.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ontec.ch
- Valid from
- Jun 14, 2026
- Valid until
- Sep 12, 2026 (53 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0539C95E459A564ED2DA372E591C245FAAED
- SHA-256 fingerprint
- 34:B2:74:41:53:FD:A2:49:D7:DE:FC:A0:86:A6:59:19:D6:26:EB:F3:7A:A6:BC:E0:47:58:2B:33:AB:2A:DB:00
- 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.