SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ch-fdunan.fr
SSL/TLS Certificate
SSL/TLS Certificate for ch-fdunan.fr
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- www.ch-fdunan.fr
- Valid from
- Jul 22, 2026
- Valid until
- Oct 20, 2026 (70 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 054A9F9F5E4EF0C038A656804CCF8BBB745D
- SHA-256 fingerprint
- EF:94:E4:B4:39:DA:05:18:E9:AD:83:4A:C1:FE:47:2C:52:11:20:A3:5F:CD:2E:76:74:13:C8:B7:A4:3E:4F:32
- Chain
- YR1 → Root YR → 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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