DNS

Is OpenNIC a reliable DNS service?

A computer networking DNS questionI was asked the question, "Is OpenNIC a reliable DNS service?" As a systems administrator on a private network, being able to create and customize a DNS server adds some management features that would not apply to the average home based web surfer.

This question was asked with the reason for using OpenNIC is to add an extra layer of privacy to your web browsing. The belief, or perhaps paranoia, is that DNS servers are able to log your requests, and by doing so they have a record of sites you have visited. The question is asked in the context that your DNS provided by your ISP is a source to track where you have been on the internet, and by using an alternative DNS service that eliminates that extra potential layer of tracking, thereby creating more privacy.

If you want to start playing around with alternative DNS solutions you need to understand the risks as well as the benefits.

First let's take a quick look at the definition of DNS (Domain Naming Service)

  • DNS is a distributed database of Domain Names and their corresponding IP Addresses.
  • DNS makes it possible to attach hard to remember IP addresses to easy to remember domain names
  • DNS translates between meaningful host names and IP addresses. It is a hierarchical naming system used to give each server on the Internet a unique name.
  • DNS keeps a complete listing of all FQDNs (Fully qualified domain names) and their associated IP address.
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