DNS monitor

DNS is the first link in the chain

If DNS fails, everything else stops. The DNS monitor queries your records and alerts you if they don't resolve or differ from the expected values.

Included in every plan: 5 free monitors checked every 5 min, down to every 1 min on paid plans.

Example configuration

UP · values match · 14 ms

How it works

Setting up a DNS monitor takes less than a minute.

1
Choose domain and record
Set the name to resolve and the record type: A, AAAA, CNAME, MX, NS or TXT.
2
Define expected values
Optional: list the correct values, for example the IPs of your load balancer.
3
Alerts on failures or changes
Resolution failed or values differ from what you expect? We alert you right away.

Everything you can tune to fit the check to your service.

Record types: A, AAAA, CNAME, MX, NS and TXT.
Expected values: One or more values the response must contain.
Custom resolver: Query a specific resolver or the authoritative name servers.
Multiple regions: Verify resolution from different geographic areas.
Interval: Frequent checks to catch unwanted changes immediately.
Response details: Each check records the values returned, useful for audits.

Verify that new records are live after switching hosting providers.

Detect unauthorised changes to your domain's records.

Check the MX, SPF and DKIM records that email delivery depends on.

Create an account in under a minute and set up your first monitor. The Free plan stays free forever.

No credit card required.