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 treg.cn
Hostname mismatch- Issued by (CA)
- ZeroSSL GmbH
- Subject
- 52demo.com
- Valid from
- Jun 1, 2026
- Valid until
- Aug 30, 2026 (40 days remaining)
- Public key
- EC 256-bit
- Serial
- 538087F6FB0780CC1F7D56AA6644B167
- SHA-256 fingerprint
- 83:E7:06:0F:2E:BF:19:8C:3C:72:03:B5:F4:AC:5B:9F:3B:90:87:3D:6C:5B:A6:D6:85:57:5E:1D:74:8C:EA:0E
- Chain
- ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46 → USERTrust ECC Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.