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 ddlyw.com

Hostname mismatch
Issued by (CA)
Asseco Data Systems S.A.
Subject
*.123guoxue.com
Valid from
Nov 16, 2025
Valid until
Nov 16, 2026 (117 days remaining)
Public key
RSA 2048-bit
Serial
50706F6E6BF0DFCBC98047BA9AAC96AD
SHA-256 fingerprint
B4:C6:AB:9E:5A:06:39:48:2C:78:C7:94:89:BC:93:0F:93:56:0E:6A:C2:D0:7B:2E:74:D3:EE:22:BD:95:92:65
Chain
Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
Subject Alternative Names (2)
*.123guoxue.com, 123guoxue.com

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.