The DNS Providers Group and Content Delivery Networks (CDN) have developed a new extension to the DNS protocol, the goal of which is to more efficiently direct users to the nearest CDN endpoint. Google, OpenDNS, BitGravity, EdgeCast and CDNetworks participate in the program, which they call the “Global Internet Speedup” (Global Internet Speedup).
A new extension of the DNS protocol is described in the IETF community: In order to optimize routing, Global Internet Speedup proposes to send a fragment of the user's IP address the size of the first three octets to the DNS servers along with the request for the site address, which will allow to send to him a data stream from nearest server.
The new protocol extension is already being implemented by OpenDNS and Google Public DNS. They work with CDN networks and have signed a contract. Google and OpenDNS hope to make the protocol extension the official IETF standard. Other potential adopters, such as internet providers, are free to implement it from the draft specification.
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In practice, it is not entirely clear how this impact will affect network performance. It is worth noting that GeoIP technology is already used by some DNS servers to determine the location of routing.
According to David Ulevitch, head of OpenDNS, since August 30, when the new technology was first implemented, 30 million users of OpenDNS and Google Public DNS could notice an improvement.