This morning (one of) the big stories on the tech wires is that Google is offering their own DNS services-
Official Google Blog: Introducing Google Public DNS-which is part of their efforts to speed up the web (along with giving site owners tools to speed up the load times of their sites). Google provides good, easy to follow, directions on the Google Public DNS page-
Using Google Public DNS. So, Google is making it easy to switch to their DNS, should you? Maybe so.
Here's the premise of having larger, public DNS systems. Your ISP, by default, gives you automatic DNS settings so when you try to do anything on the Internet, the app knows where to go. When you type google.com or futureshop.ca into your address bar it looks up the actual IP address through the ISP's DNS. This is all well and good, and works 99.9% of the time, but ISP DNSes are notoriously slow to update (like if you buy a new domain or change your website's DNS settings) and often don't have huge capacity behind them. Enter open, public DNS. The first provider, that I know of, was OpenDNS-
OpenDNS | Internet Navigation And Security-who offer not only larger capacity DNS servers around the world, but also protection from phishing scams and domain name typos. I've been using them for years now and, yes, I noticed right away that sites loaded faster, email send/receive was faster, and essentially everything to do with using the Internet was faster. Just because I didn't have to wait as long for the answer to come back from DNS.
As far as I can tell, OpenDNS has been very successful at what they do and are getting revenue by selling packages that offer more features and security (I use the free one and it's just fine and, in fact you don't need to sign up for anything to start using it). Now Google is getting into the game with a "test" of Google Public DNS, which works on the same principle as OpenDNS, except that it's Google and it doesn't have all the security protections that OpenDNS has.
Should you try it? Yeah, give it a shot. Honestly it can't hurt and I'm already using it (with OpenDNS as a back up). Is this a good thing? That is a bigger, and stickier, question. If you control the DNS, you control where people go when they want to visit websites. There is implicit trust that DNS servers are genuine, which is why when they are compromised by hackers it's a huge deal. So Google or OpenDNS could poison the DNS records to redirect people to a site different than what the site owners intend and you'd never know it. Would they? Probably not. For now, OpenDNS and Google are both doing something helpful for Net users. Using either of their services you should find your surfing to be a touch faster (a noticeable touch). Give it a shot and let me know what you think.
Update: Just as I was about to post this, David Ulevitch (founder of OpenDNS) posted his thoughts on Google DNS-
OpenDNS Blog » Some thoughts on Google DNS. David gives some excellent and thoughtful commentary that I think is certainly worth the read.