SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
leadin.fr
SSL/TLS Certificate
SSL/TLS Certificate for leadin.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.leadin.fr
- Valid from
- Sep 12, 2026
- Valid until
- Dec 11, 2026 (69 days remaining)
- Public key
- EC 384-bit
- Serial
- 068FCBB6D35F3F3EF1C6A6D69D6078DACA87
- SHA-256 fingerprint
- 53:D7:C4:72:F9:8D:7C:B4:49:1A:15:87:20:C2:2A:D2:BE:D0:8B:90:9D:32:51:06:44:FB:49:00:13:C8:8E:96
- Chain
- YE1 → Root YE → ISRG Root X2 → 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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This is today's certificate. Turn on monitoring and we'll watch leadin.fr continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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