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 szed.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- szed.org
- Valid from
- Jul 8, 2026
- Valid until
- Oct 6, 2026 (77 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 057945E67C8146D3CB998604E7EB15E6BB99
- SHA-256 fingerprint
- 52:B7:A3:DC:8B:FA:F3:75:27:57:B9:10:9C:DF:5D:8F:E0:83:D7:C4:72:A1:84:86:44:E1:E1:BF:AA:9D:FA:04
- 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).