SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
c-f-t.net
SSL/TLS Certificate
SSL/TLS Certificate for c-f-t.net
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- c-f-t.net
- Valid from
- Dec 19, 2025
- Valid until
- Mar 19, 2026 (expired 172 days ago)
- Public key
- EC 256-bit
- Serial
- 05DB2F18E29B98DE2B9884C7C96075992327
- SHA-256 fingerprint
- 90:AB:0E:23:4E:72:53:EB:98:48:F3:1C:FC:B9:E7:A7:F9:53:FA:32:9E:A9:8E:E2:70:17:89:2E:AC:55:BB:70
- Chain
- E7 → 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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Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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