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 ucsb.edu
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ucsb.edu
- Valid from
- Jun 24, 2026
- Valid until
- Sep 22, 2026 (63 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 058311CF108AF396C30E5F61D0293FD379C1
- SHA-256 fingerprint
- 2F:9D:C7:85:B2:DE:C2:0A:F9:BB:07:D2:48:BA:0D:9E:42:62:B5:3D:B5:E1:A3:1C:1C:90:12:2C:24:02:37:D1
- 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.