DNS monitors

Markdown

Watch that a domain resolves to the records you expect.

A DNS monitor checks that a domain resolves correctly. DNS problems are easy to miss — a bad change or a registrar issue can quietly break email or your whole site — so it's worth watching directly.

A DNS monitor's detail panel showing the domain being resolved, its resolution time, and its recent check history A DNS monitor watches resolution itself - it will catch a broken record even while the web server behind it is perfectly healthy.

Setting it up

  • Target — the domain to resolve, e.g. example.com.

What counts as up or down

The monitor is up when the domain resolves successfully and down when the lookup fails or times out. We record how long resolution takes so you can catch a slow or flaky resolver.

Good to know

  • A DNS monitor confirms resolution works; it doesn't confirm the resolved server is actually serving traffic. Pair it with an HTTP or ping monitor for the full picture.
  • Changing DNS records can take time to propagate. A brief blip right after you make a change is usually propagation, not an outage.

Get started

Last updated 2026-07-15