SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
defim-lille.fr
SSL/TLS Certificate
SSL/TLS Certificate for defim-lille.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- defim-lille.fr
- Valid from
- Aug 31, 2026
- Valid until
- Nov 29, 2026 (39 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06D2303C6E7E7AA1907ADBCED6FA5F652AF1
- SHA-256 fingerprint
- E8:DE:09:60:94:4C:72:25:73:13:40:B8:44:01:88:5C:3C:9F:EB:CB:C8:DC:0E:E2:B5:CD:C1:AA:C0:DF:00:2F
- Chain
- YR2 → Root YR → 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 10, 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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