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 pkn.cn
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- pkn.cn
- Valid from
- May 12, 2026
- Valid until
- Aug 10, 2026 (19 days remaining)
- Public key
- EC 256-bit
- Serial
- 05893484796DC3CFC83EF89C81CAC7E54639
- SHA-256 fingerprint
- F8:6D:85:DC:42:F0:09:80:47:44:52:B5:92:69:3A:6A:42:66:8C:0F:84:66:9E:F3:BE:E0:97:22:4B:DE:9C:D6
- Chain
- E7 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.