SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
opnserver.com
SSL/TLS Certificate
SSL/TLS Certificate for opnserver.com
Self-signed- Issued by (CA)
- opnserver.com
- Subject
- opnserver.com
- Valid from
- Jun 10, 2025
- Valid until
- Jun 10, 2026 (expired 41 days ago)
- Public key
- RSA 2048-bit
- Serial
- 7148C539
- SHA-256 fingerprint
- 19:4A:B3:24:A4:05:CE:1B:DA:10:96:D8:FF:AF:92:11:58:D9:8A:27:97:A9:7D:2A:3E:2A:96:5F:1B:6F:87:CB
- Chain
- opnserver.com
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.