SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ark.energy
SSL/TLS Certificate
SSL/TLS Certificate for ark.energy
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- ark.energy
- Valid from
- Jul 31, 2025
- Valid until
- Oct 29, 2025 (expired 334 days ago)
- Public key
- RSA 4096-bit
- Serial
- 0634B2E72C8B1B2FCD2D8A4D11A24A10F5C0
- SHA-256 fingerprint
- 4D:F9:E8:52:B2:CE:EE:31:A8:05:9E:04:4B:21:2B:D1:15:2C:54:14:24:EE:6B:E5:30:AC:EF:1A:46:C8:E4:B7
- Chain
- R10 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, trust-provider.com).
This certificate has been served since Sep 26, 2026.
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Uptime
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DNS changes
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TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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