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 waf.dog
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- waf.dog
- Valid from
- Apr 14, 2026
- Valid until
- Jul 13, 2026 (expired 15 days ago)
- Public key
- EC 384-bit
- Serial
- 058072FBEFA4C1C5E050D1CF541C0D47A767
- SHA-256 fingerprint
- D3:57:4D:3C:28:4E:F1:E4:1B:4B:45:86:A4:78:AF:6F:18:06:1B:8A:FA:78:B3:6D:AF:4C:F7:32:08:9C:98:ED
- Chain
- E7 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
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DNS changes
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TLS certificate
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