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 swi.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- swi.ch
- Valid from
- Jul 6, 2026
- Valid until
- Oct 4, 2026 (75 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05F9520F0CE16A890BA0FE4312B53F5DA60A
- SHA-256 fingerprint
- 3D:84:F5:AA:BF:15:76:C2:AF:09:1C:15:9A:E0:51:E1:B4:BA:2E:C3:A3:54:FF:C0:CE:D8:4F:8E:5F:A5:8D:56
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.