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Google DNS and OpenDNS Users Are Getting a Web Speed Boost


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How to Enjoy the New Web Speed Boost from Google DNS and OpenDNS

If you use Google's Public DNS server or OpenDNS as your DNS server, you may notice starting today that YouTube videos load faster and other web content comes in quicker. If you're using your ISP's DNS server as the default, now's a good time to try Google's or OpenDNS.

From Lifehacker

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OpenDNS and Google working with CDNs on DNS speedup

A group of DNS providers and content delivery network (CDN) companies have devised a new extension to the DNS protocol that that aims to more effectively direct users to the closest CDN endpoint. Google, OpenDNS, BitGravity, EdgeCast, and CDNetworks are among the companies participating in the initiative, which they are calling The Global Internet Speedup.

The new DNS protocol extension, which is documented in an IETF draft, specifies a means for including part of the user's IP address in DNS requests so that the nameserver can more accurately pinpoint the destination that is topologically closest to the user. Ensuring that traffic is directed to CDN endpoints that are close to the user could potentially reduce latency and congestion for high-impact network services like video streaming.

The new protocol extension has already been implemented by OpenDNS and Google's Public DNS. It works with the CDN services that have signed on to participate in the effort. Google and OpenDNS hope to make the protocol extension an official IETF standard. Other potential adopters—such as Internet ISPs—are free to implement it from the draft specification.

It's not really clear in practice how much impact this will have on network performance. It's worth noting that GeoIP lookup technology is already used by some authoritative DNS servers for location-aware routing. The new protocol extension will reportedly address some of the limitations of previous approaches.

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Is it really worth it? You can tell by ping times that Google DNS and OpenDNS take longer to reach than your local ISPs DNS (not in all cases, of course). This means that browsing will seem a little slower/laggy by comparison, which may not be a very nice trade-off for your Youtube video downloading a little faster (isn't it fast enough to keep ahead already?). Hopefully, the major ISPs will get on board soon.

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