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 spk.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- spk.pl
- Valid from
- Jun 24, 2026
- Valid until
- Sep 22, 2026 (64 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 055E7E35FB8866DDCD2B9367DAB4583B65E3
- SHA-256 fingerprint
- 96:A2:A3:9D:F6:9D:2C:A3:11:F8:21:FD:51:59:F3:47:CD:0F:B3:53:3D:6B:11:4A:25:33:F7:56:B0:95:67:1F
- 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.