SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
johnwpreston.ca
SSL/TLS Certificate
SSL/TLS Certificate for johnwpreston.ca
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- johnwpreston.ca
- Valid from
- Nov 13, 2025
- Valid until
- Feb 11, 2026 (expired 216 days ago)
- Public key
- RSA 2048-bit
- Serial
- 064AB2DB057BA6F1FA7AACC6B15C377C33F4
- SHA-256 fingerprint
- C9:E8:A3:CA:58:05:21:79:52:15:3D:33:2A:62:F0:4E:98:10:52:4B:EC:A7:98:18:89:2A:64:06:55:48:92:AC
- Chain
- R13 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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DNS changes
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TLS certificate
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