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 simax.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- simax.pl
- Valid from
- May 31, 2026
- Valid until
- Aug 29, 2026 (39 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05C81E7429489578A410FC7D17F7067295F4
- SHA-256 fingerprint
- D5:E6:D7:67:54:7E:0A:C0:0D:D4:AB:19:9B:85:43:F7:77:D9:1F:44:12:4E:9B:2B:94:39:80:A8:71:30:C3:2D
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.