Check out our new white paper: How GeoDNS Works

GeoDNS Services

The most powerful DNS-level routing services

What is GeoDNS?

GeoDNS is a powerful set of tools that allow you to determine how end-users will reach your domains based on their location (or other unique attributes).

You can use GeoDNS to create rules that permit or prevent specific users from accessing your content. For example, you can use this technology to:

  • Build your own Content Deliver Network (CDN)
  • Geographic load balancing
  • Block malicious or unwanted traffic
  • Optimize routing for different networks or regions

New! How GeoDNS Works

What You'll Learn:

  • The tech behind our GeoDNS services
  • How each service impacts the path of a query
  • Benefits of GeoDNS
  • Use cases
  • How EDNS client subnet works

Check it Out
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IP Filters

Take back control of your traffic with IP Filters. You decide who can access your site and who can't based on their location, IP address (IPv4 and IPv6), ASN (Autonomous System Network) of the resolving name server or EDNS client subnet.

Available for A, AAAA, CNAME, and now ANAME records.

  • Need to deliver location specific content? Set an IP Filter rule to include or exclude particular regions or cities.
  • Great for retailers with location specific sales, ad delivery, and much more.

Learn How to Use IP Filters

Pro Tip

Create your own DNS Firewall! Filter out malicious traffic sources by dropping any lookups that match your IP Filter rule. This service is a first of its kind, providing you with a DNS level firewall to combat DDoS attacks.


Use our GeoIP engine to automatically runs a proximity search to identify which servers are closest to your end-users for the fastest response.

GeoProximity targeting let's you hone in on users from as broad as regional, to as granular as city level lookups! You can also specify the longitude and latitude of your lookups.

Available for A, AAAA, CNAME, and now ANAME records.

Learn How to Use
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Download Our Free Ebook

What You'll Learn

  • How GeoIP services work
  • The tech behind IP Filters and GeoProximity
  • Applications for GeoIP services
  • Performance benefits

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Global Traffic Director

GTD uses zone-based routing techniques to optimize and direct your domain's traffic flow.

Works at the domain level. Once enabled, you can create unique records for each of the five available regions.

  • US East
  • US West
  • Europe
  • Asia-Pac
  • Oceania

Learn How to Use GTD

Supercharge GeoIP Services with GTD

How we are the most accurate GeoDNS provider

This method corrects any errors caused by incorrect IP to Location mapping databases from GeoIP services (IP Filters and GeoProximity); as well as incorrect lookups by poor peering practices.

Constellix is the only platform that offers these two services together, giving you the most accurate configurations in the industry. (Patent pending)

geofilter and gtd


Double Down

Combine IP Filters with GeoProximity! As long as your IP Filter rules are matched first and then GeoProximity rules are matched second.

The Future of DNS

Recent trends show that end-users prefer when their experience is personalized. IP Filters can be used to deliver tailored content that's specific to a user's location.

Real-Time Responses

GeoIP responses are centered on an IP to location lookup that are done in real-time and are configurable with ANAME, CNAME, and AAAA records.

GeoDNS with EDNS Client Subnet

Our GeoIP servers use EDNS-Client-Subnet to give you the most accurate response based on the actual location of your IP (as opposed to the closest regional server). Additionally, the Geo backend can be used to provide service over several clusters. Any of which can be taken out of use easily, say for maintenance purposes.

Ask your resolver if they support EDNS and learn how you can start creating even more precise configurations. Constellix has established itself as the industry leader in EDNS offerings, and encourages resolvers to consider adopting EDNS technology for greater accuracy.

These features can be defined on a per record basis to ANAME, CNAME, and AAAA records.

Start Using Constellix Today & Only Pay for What You Use!