SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
duncanmackenzie.net
SSL/TLS Certificate
SSL/TLS Certificate for duncanmackenzie.net
Expired- Issued by (CA)
- DigiCert, Inc.
- Subject
- duncanmackenzie.net
- Valid from
- Mar 26, 2025
- Valid until
- Sep 26, 2025 (expired 342 days ago)
- Public key
- RSA 2048-bit
- Serial
- 0B45B1D3A6152D054C5AC5433D139019
- SHA-256 fingerprint
- 16:76:0F:B9:55:95:CF:2C:DC:45:CD:17:D8:54:59:79:8F:12:CD:AE:CA:69:75:58:60:B3:9D:FE:86:58:31:99
- Chain
- GeoTrust Global TLS RSA4096 SHA256 2022 CA1 → DigiCert Global Root CA
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 Jul 24, 2026.
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TLS certificate
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