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 fl1.li
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- fl1.li
- Valid from
- Jun 22, 2026
- Valid until
- Sep 20, 2026 (60 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 054059E4BBC4CC299E157858167C9D8CFB28
- SHA-256 fingerprint
- 8D:F3:6D:3C:E4:B1:27:3A:CC:0C:9A:56:29:82:FD:1B:5C:AB:D1:92:6A:6F:F7:49:3C:4A:51:82:37:14:3F:67
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is not among the authorities this domain's CAA records authorize (digicert.com). This can indicate a misconfiguration or an unexpected issuance.