Google Public DNS

December 4th, 2009 by Naz Leave a reply »
Domain Name System(DNS) allows your computer to register and resolve domain names. The DNS makes it possible to assign domain names to organizations independent of the routing of the numerical IP address. In other words, DNS is a system that translates domain names into IP addresses. This is necessary because computers only make use of IP addresses yet we use only human readable names since the names are easier to remember than IP addresses. Without this DNS resolution, the internet would be a very inconvenient place.


Google has introduced a new services – “Google Public DNS” claiming that it will speed up our web browsing experience. It will provide other benefits as well, including a more stable browser and boosted security against virus, spam, and malware sites. To use Google Public DNS, you need to change network settings so that your website requests go to the Google service instead of to your ISP. According to Google:


Google Public DNS stores two sets of logs: temporary and permanent. The temporary logs store the full IP address of the machine you’re using. We have to do this so that we can spot potentially bad things like DDoS attacks and so we can fix problems, such as particular domains not showing up for specific users.

We delete these temporary logs within 24 to 48 hours.

In the permanent logs, we don’t keep personally identifiable information or IP information. We do keep some location information (at the city/metro level) so that we can conduct debugging, analyze abuse phenomena and improve the Google Public DNS prefetching feature. We don’t correlate or combine your information from these logs with any other log data that Google might have about your use of other services, such as data from Web Search and data from advertising on the Google content network. After keeping this data for two weeks, we randomly sample a small subset for permanent storage.


Google are obviously want to conquer the Net! I think it’s all about the money and yes Google are smart! Hopefully the ‘Internet’ is not changing to ‘Googlenet’ someday.

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