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 kapus.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kapus.pl
- Valid from
- Jul 12, 2026
- Valid until
- Oct 10, 2026 (81 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05D5A972E6468DE28CFAC0FFFE042056BC96
- SHA-256 fingerprint
- 20:BA:91:15:C0:A6:37:63:94:63:DB:0F:6B:6C:84:C5:FD:6A:A4:BA:2B:8F:C9:23:5A:A0:FC:FE:51:2A:40:E6
- 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.