"OpenDNS, Google, and a few others have built a new technology into their Internet operations that's designed to speed up the delivery of data around the globe.
The technology augments the Domain Name System that provides the numeric Internet Protocol (IP) address needed to get data to an Internet domain such as news.com. Those that developed it include OpenDNS, Google, and VeriSign. Called edns-client-subnet in technical circles, or more ambitiously the "Global Internet Speedup," it uses geographic information associated with IP addresses to help computers fetching data get it from the closest--and therefore fastest--server.
"Anybody using OpenDNS or Google Public DNS will immediately get the benefits of this technology," said OpenDNS Chief Executive David Ulevitch in an interview. Using it, "the worst-case scenario is that things remain they way they are today," and the best-case scenario is that network delays are as low as they can be, he said.
Google proposed the technology last year, though Ulevitch said it's been under discussion for longer than that. Google has a powerful interest in making the Web faster, including through the use of its own Google Public DNS service, and its Internet operations are big enough that it can use the technology both when requesting data from other servers and when others request data from its own servers.
Google endorsed the work, too. "Google is committed to making the Internet faster--not just for our users, but for everyone," said Google Distinguished Engineer Dave Presotto in a statement. "We will do that any way we can, by improving protocols, browsers, client software, and networks."
The tried and true analogy for DNS is that it acts like a phone book (tried and true, at least, if you remember what phone books were): you look up a person's name and the book provides the phone number. Ulevitch likens the new technique to a phone book that gives a bit more information based on part of your own phone number...."
Continued at: Google, OpenDNS add geo speed boost to Net - CNET News