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 c4k.net
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- frugalcooking.com
- Valid from
- Apr 21, 2025
- Valid until
- Jul 20, 2025 (expired 429 days ago)
- Public key
- RSA 2048-bit
- Serial
- 06B5DFFB83B0DE4551EA6E2D5024D433250A
- SHA-256 fingerprint
- 1D:E0:80:ED:28:BD:DE:CD:1E:8D:65:99:F1:BD:C8:35:E0:F5:41:37:D3:D8:7D:51:2E:B3:B7:BE:2A:39:3E:16
- Chain
- R11 → ISRG Root X1
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 Sep 17, 2026.
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TLS certificate
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