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 fian.dev
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- fian.dev
- Valid from
- Jul 12, 2026
- Valid until
- Oct 10, 2026 (81 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05BBECCBD371DF54F9E80BA1A2021D4ED35A
- SHA-256 fingerprint
- FB:52:B9:91:C8:FC:32:89:DA:20:FC:12:6A:CF:D9:97:01:EC:D5:E3:63:45:42:9F:86:58:25:90:15:EC:AA:45
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, pki.goog, sectigo.com).