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OpenDNS - A Technical Overview / Our Global Datacenter Locations

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The OpenDNS-led initiative to speed up the Internet.

Our Global Datacenter Locations

Anycast routing is the system we use to make sure you always talk to our nearest datacenter. 

Typically, an IP address on the Internet routes to a single server somewhere just like a phone number typically rings a single phone. With Anycast routing, however, we are able to make an IP address exist on hundreds or even thousands of servers and we have designed a network that will always make sure you are talking to the location nearest to you.

Our Anycast routing infrastructure not only provides speed, but it also makes us more reliable. By having an IP address spread across dozens of sites, we increase the overall resiliency of the system. If a site were to go offline to do a natural disaster, equipment failure or maintenance, all requests would be transparently re-routed to the next closest site. Additionally, whenever we add a new datacenter, users nearest to it will automatically begin using it, and available capacity at nearby datacenters will increase as load is more evenly distributed.