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 ifa-rennes.org

Valid
Issued by (CA)
Let's Encrypt
Subject
ifa-rennes.org
Valid from
Sep 9, 2026
Valid until
Dec 8, 2026 (56 days remaining)
Public key
EC 256-bit
Serial
068405D53E881AEF3F4299F49EFD1B2F7FA3
SHA-256 fingerprint
02:EA:1A:AB:5B:5D:EF:E5:11:13:FB:AA:34:F8:B4:53:89:8D:0E:02:FB:E0:C5:C6:5B:2D:4E:CD:E1:D6:58:6F
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (1)
ifa-rennes.org

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 Oct 7, 2026.

Never get surprised by ifa-rennes.org's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ifa-rennes.org 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.