DNS Failover

What is DNS Failover?

Failover is a DNS record setting that automatically updates your records based on the availability of the endpoints in the record.

You can specify one or multiple backup IP addresses that are only used in the event that your primary IP address is unavailable. Failover is powered by our integrated monitoring services that routinely check the health of your endpoints.

DNS Failover is the most popular service we offer and has saved businesses millions every year in lost revenue due to downtime.

How Failover Works

one finger
Failover uses health checks to monitor the status of the IP address(es) in your records. Health checks run every 2-4 minutes from multiple monitoring locations.
two fingers
A failover event will only occur if two of our monitoring nodes report your primary IP address as down. In that case, we will run a quick health check for your first backup system. If it is available, we will update the record to point to your first backup IP address.
three fingers
If that one goes down, we’ll check the second backup system and update the record. You can set up to four backup IP addresses in a failover record.
four fingers
We will continue to monitor your primary endpoint, even after a failover event has occurred. When it comes back online, we will automatically “failback” traffic to your primary.

Tech Specs

Specify up to four backup IP addresses.

Monitoring available over: TCP, UDP, HTTP, or HTTPS protocols on any port you desire.

Updates (failover and failback) are propagated instantly across our entire network.

Need more advanced Failover?

Our new product, Constellix, offers more granular monitoring, so your failover changes happen quicker.

But wait theres more...

  • Failover is available for: A, AAAA, ANAME, and CNAME records
  • Choose up to 14 different monitoring locations
  • 30 second to one day monitoring intervals
  • Traceroute and visual traceroute in notification report
  • Avoid false positives with verified checks
  • All IP's in the failover config are constantly monitored (not just when the primary is down)

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Small Business

Not included with Small Business membership. Can purchase as an add-on.

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3 Failover Records Included

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10 Failover Records Included

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Additional Records

$4.95 per record / year

10-Pack of Records

$45.95 per 10-pack / year

Related Articles


Tutorials: Learn how to setup DNS Failover and system monitoring with these tutorials.

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