SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
f-o-c.com
SSL/TLS Certificate
SSL/TLS Certificate for f-o-c.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- dr-goettfert-systems.de
- Valid from
- Oct 24, 2020
- Valid until
- Jan 22, 2021 (expired 2070 days ago)
- Public key
- RSA 2048-bit
- Serial
- 046031ABD1DACED1CF7D94E442A7BCA0D246
- SHA-256 fingerprint
- 2B:98:D2:55:BD:27:48:9D:69:2B:59:1A:49:A3:E6:24:29:A5:5E:D3:F9:4C:66:30:B1:86:DF:B1:23:9C:28:BE
- Chain
- Let's Encrypt Authority X3
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 9, 2026.
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DNS changes
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TLS certificate
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