Open DNS: A big DNS Cache

To begin with, i thought of writing a little about DNS and then moving on. So here I am, beginning with a very basic question ” What is DNS ? “.

                                                            What is DNS

Ok, having written that, i also need to write the explanation for this question. :). So here you go:

DNS stands for Domain Name System.Whenever we type a URL in our browser, it is first translated into computer translated numbers. In short, DNS is a database system that translates a fully qualified domain name into an IP Address.

Usually, most networks use the DNS servers provided by their ISP’s or run their own small DNS Server.

I was looking for a DNS server which really gives a boost to my internet speed and also adds some crispiness to my internet broadband connection. Thats when i found OpenDNS. OpenDNS is free, fast and secure DNS Server. As per the website:

OpenDNS is a better DNS, free to all. OpenDNS uses its distributed network of DNS servers to speed up your Internet experience, increase reliability, improve security and make DNS smarter for users all over the world.


OpenDNS is a zero downtime service. Personally, i have been liking it since the day i started using it. Also, the thing that impresses me about OpenDNS are the features that come along with it. Once the setup is complete ( which is as simple as changing the IP on your computer ), OpenDNS blocks unsafe websites and also fixes up the mistyped domain names.

The key question that might and rather should come to anyone’s mind is ” How can OpenDNS be free?”. The answer to this key question is; OpenDNS makes money by placing advertisements on pages for domains which do not exist.

Try out OpenDNS by clicking here.

If you find the service interesting, do let me know.




8 Responses

  1. You have taught me much on technology and I am very grateful to you. I like learning on your blog.

  2. hi Kenneth,
    Thanks a ton for the comments.
    Thanks again

  3. Nice article .. I have seen the opendns page for wrong urls opening up at work. May be airtel is using openDns … i am not sure because the internet connection at home (reliance) does not show that page.

    I tried changing the settings to Open DNS for my linksys router .. was partially successful. … will play with it more and let you know the results … how do u actually find out if there is a performance difference ?

    Prateek Dayal

  4. Hi Prateek,
    Thanks for the comment. I have a firefox extension called fasterfox which i use, this also gives me the time it takes for a page to load. When i use OpenDNS instead of my regular Sify DNS, the page loads a few seconds fast.
    However what i like more about OpenDNS is that it prevents me from Phishing sites.


  5. Nice blog, I was wondering if you could put a link to my website in your blog/webpage, thanks.

    Site name: HotBrick Network Solutions
    Site Url:
    Description: Specializing in internet security, Content filtering, VPN, Firewall, virtual private network, firewall security, network security, virtual private networks, and firewalls hardware

    Again thanks and have a great day.
    Mike McClodden

  6. great post vaibhav … I always – as they are easy to remember .. i constantly change the DNS servers 😛

  7. […] does a DNS work? Posted on June 1, 2008 by Vaibhav Pandey I earlier wrote about OpenDns and how it can help you stay ahead while making a dns query. But interestingly, i met someone recently who quite didn’t […]

  8. […] Also read: Open DNS: A big DNS Cache […]

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