What is DNS?
Posted by Nayanendu Mondal on Monday, October 17, 2011
NS stands for Domain Name System. In the Internet it is always not what it seems. When we type the
address www.techgyo.com, it is actually not represented by the alphabets, instead it is represented by a set of
numbers like 192.168.1.100. However since all the websites are represented in the same way, it would be humanely
impossible to remember a website address more than a few. So to over come this, the DNS comes into action. Now what
DNS servers do is to convert these set of numbers into a humanely readable format or the website address. And also
the vice verse.
What Is Open DNS?
every ISP (Internet Service Provider) maintains their own DNS servers, to provide service. Now these are private DNS
and are mostly locked by them. And these also have many limitations, one of them being the slow as they don’t have
many servers to resolve the host-names.
Now Open Dns is the DNS system which can be used by anyone over the world and it is not locked. Means anyone can send
a query to its servers.
Why should I use Open DNS?
Open DNS is a alternative DNS service to your ISP Dns.
The points that should be noted is that Open DNS offers faster resolution and many other advanced features. Like
misspelling correction, protection from Phishing and many other optional filtering. The increase in speed of
resolution is done as it maintains servers all over the world and a huge Cache of web pages so as to minimum the
delay as much as possible. Which is very much limited in the case of your ISP Dns servers.
Open DNS has also launched a program called Phis tank, in which users can submit probable phishing sites, which are
then analyzed and added to their database. So you get a added layer of security from phishing sites.
If you are experiencing problems with your internet connection speed or download speed, you should check my older
post about “How to resolve the issue“.
Open DNS has also some paid programs, but however you can use their free programs as it is as good as the paid
one.(Which includes some additional facilities).
How Do I Shift To Open DNS?
The Open DNS address are as mentioned below:
208.67.222.222 (resolver1.opendns.com)
208.67.220.220 (resolver2.opendns.com)
208.67.222.220
208.67.220.222
Now to change your DNS address, it would be best to directly change it from your router.
It can also be done from Network connections
address www.techgyo.com, it is actually not represented by the alphabets, instead it is represented by a set of
numbers like 192.168.1.100. However since all the websites are represented in the same way, it would be humanely
impossible to remember a website address more than a few. So to over come this, the DNS comes into action. Now what
DNS servers do is to convert these set of numbers into a humanely readable format or the website address. And also
the vice verse.
What Is Open DNS?
every ISP (Internet Service Provider) maintains their own DNS servers, to provide service. Now these are private DNS
and are mostly locked by them. And these also have many limitations, one of them being the slow as they don’t have
many servers to resolve the host-names.
Now Open Dns is the DNS system which can be used by anyone over the world and it is not locked. Means anyone can send
a query to its servers.
Why should I use Open DNS?
Open DNS is a alternative DNS service to your ISP Dns.
The points that should be noted is that Open DNS offers faster resolution and many other advanced features. Like
misspelling correction, protection from Phishing and many other optional filtering. The increase in speed of
resolution is done as it maintains servers all over the world and a huge Cache of web pages so as to minimum the
delay as much as possible. Which is very much limited in the case of your ISP Dns servers.
Open DNS has also launched a program called Phis tank, in which users can submit probable phishing sites, which are
then analyzed and added to their database. So you get a added layer of security from phishing sites.
If you are experiencing problems with your internet connection speed or download speed, you should check my older
post about “How to resolve the issue“.
Open DNS has also some paid programs, but however you can use their free programs as it is as good as the paid
one.(Which includes some additional facilities).
How Do I Shift To Open DNS?
The Open DNS address are as mentioned below:
208.67.222.222 (resolver1.opendns.com)
208.67.220.220 (resolver2.opendns.com)
208.67.222.220
208.67.220.222
Now to change your DNS address, it would be best to directly change it from your router.
It can also be done from Network connections