SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
adct.org.tw
SSL/TLS Certificate
SSL/TLS Certificate for adct.org.tw
Self-signed- Issued by (CA)
- letsencrypt-nginx-proxy-companion
- Subject
- letsencrypt-nginx-proxy-companion
- Valid from
- Feb 28, 2024
- Valid until
- Feb 27, 2025 (expired 593 days ago)
- Public key
- RSA 4096-bit
- Serial
- 51B0FE80373E1BA7177C1FE9B65177B6AB69B4D1
- SHA-256 fingerprint
- BD:C3:87:04:F4:FD:43:A5:0E:45:B6:7A:16:75:FA:58:E2:4D:C4:1D:23:14:EF:8F:9B:0B:7B:19:EE:F7:17:7A
- Chain
- letsencrypt-nginx-proxy-companion
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Oct 10, 2026.
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TLS certificate
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