SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for asso-generationnumerique.fr

Valid
Issued by (CA)
Let's Encrypt
Subject
asso-generationnumerique.fr
Valid from
Aug 18, 2026
Valid until
Nov 16, 2026 (69 days remaining)
Public key
RSA 2048-bit
Serial
05CB0C9E712465B42654C0CF651251C0205E
SHA-256 fingerprint
A5:E1:32:D7:90:6C:A8:E5:EF:DD:90:F3:45:AC:2B:49:53:C0:81:DE:9D:E9:31:66:DC:41:79:E9:75:29:F8:32
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
asso-generationnumerique.fr, www.asso-generationnumerique.fr

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by asso-generationnumerique.fr's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch asso-generationnumerique.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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.