http://www.root-servers.org http://www.root-servers.org The organizations across the top of that page run the root servers. As you can see on the map, there ar

http://www.root-servers.org http://www.root-servers.org The organizations across the top of that page run the root servers. As you can see on the map, there are quite a few physical servers for those 13 separate root domains, 359 to be exact. The root servers don't actually replicate amongst themselves and they don't actually hold all that much data. They all serve the same set of zones, all from one text file that is updated infrequently, specifically the DNS Root Zone file on this page: http://www.iana.org/about/popular-links http://www.iana.org/about/popular-links