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 rti.land
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- rti.land
- Valid from
- Feb 17, 2026
- Valid until
- May 18, 2026 (expired 65 days ago)
- Public key
- EC 256-bit
- Serial
- 05A7DA77903861373359DDED40E57BF89D2D
- SHA-256 fingerprint
- 06:34:7D:AE:30:5C:7E:B0:B4:57:C4:B2:63:0E:A2:73:74:F9:92:82:91:7F:2F:CB:03:D6:6D:84:B0:E4:B0:28
- Chain
- E8 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).