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 fit-matters.com

Expired
Issued by (CA)
Let's Encrypt
Subject
fit-matters.com
Valid from
Mar 8, 2024
Valid until
Jun 6, 2024 (expired 825 days ago)
Public key
RSA 4096-bit
Serial
03DE718D5E3FAA04E20D5DC081F683B53635
SHA-256 fingerprint
FE:C4:7D:17:B5:D7:10:F4:1E:E0:B4:58:F2:D3:FE:C4:47:BB:3F:F9:80:4F:E7:D2:34:D3:E9:DD:E8:6F:00:61
Chain
R3 → ISRG Root X1
Subject Alternative Names (2)
fit-matters.com, www.fit-matters.com

Certificate Authority Authorization (CAA)

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

Never get surprised by fit-matters.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch fit-matters.com 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.