DNS Monitoring

DNS monitors help you make sure your domain names resolve correctly and consistently across the internet.
They’re especially useful for tracking propagation issues, catching DNS outages early, or verifying that records haven’t changed unexpectedly.

Just like with other monitors, when a DNS check fails, your team can investigate and resolve it and update your status page if it affects users.

What DNS Monitors Do

• Verify that your domains resolve to the correct IP addresses or mail servers.
• Detect DNS outages, slow resolutions, or record mismatches.
• Track DNS performance and reliability from multiple global regions.
• Get visibility into your record values directly from monitoring logs.
• Keep your public or internal status pages up to date automatically.

Adding a DNS Monitor

To create one, open your project → Monitors → Add monitor.

Monitor type

Select DNS from the list of monitor types.

Enter the hostname you want to monitor — for example, example.com — and choose the record type you want to check.

Supported record types include:

• A record → verifies the IP address of a domain
• MX record → verifies the mail exchange server for a domain

How DNS checks work

A DNS monitor queries your domain’s record at regular intervals from multiple locations.
It compares the result with the expected value you’ve configured.

The monitor is considered successful when the returned record matches your expected value.
If the record is missing, points to the wrong host, or fails to resolve, the monitor is marked as down.

You can configure:

• Record type: A or MX
• Expected value: e.g. 192.0.2.1 for A record or mail.example.com for MX

Advanced settings

• Friendly name: Assign a descriptive name to your monitor for easier identification.
• Run checks every: Decide how frequently to test the endpoint.
• Run from: Choose testing locations (America, Europe, Asia).
• Add to status page: Display API uptime and response statistics publicly.
• When a monitor fails: Initiate an incident, notify subscribers, or publish to your status page.
• When a monitor recovers: Resolve incidents and automatically update your status page.