What is DNS or a DNS Server??
The Internet works on IP addresses; DNS (Domain Name Services) Servers are used to convert the addresses we see and read into IP addresses and vice-versa. It would be very hard to remember an address such as: 127.0.0.7, which is the IP address equivalent of our old friend; “www.tekguard.com”. In addition to the immediate and obvious benefit of using an easily recognizable and memorable Domain Name, there is a more substantial benefit. Let’s say that the address changes for a network server or mail server, you would only have to change the DNS record for that specific machine on the DNS server. Then all the other machines that need to access the mail or network server would be able to do so without the need to inform them of the change of IP address! In this instance the DNS server functions like a “forwarding service” or “clearing house” making the change of address transparent to all the other machines. The specific information for every machine within a particular Domain (i.e. “tekgu
DNS or Domain Name System or Domain Name Server all are same.It translates ip addresses into names which are easy read and remember for people. Web servers are ultimately accessed by an I.P. address. When you send a request for a web page that contains a domain name that name has been translated into the I.P. address of the server along the way. There are Domain Name Servers all across the internet that accomplish this task. You set up DNS entries on one server and those setting will propagate across all the other servers around the world. You need to set up at least two different DNS records. One is a "C Name" record (common name). This is to match up your domain (i.e. example.com) with the I.P. address of the server the website files resides on. You also need to set up an "A Name" record (alias name). You set this to point another version of your domain name to what you set up as your C Name. Specifically you need to point your domain name with a "www." to the one without (so that people will get your site no mater how they type your domain name in the address bar). In other words, you use the A Name record to point www.example.com to example.com and then the C Name record points domain.com to the I.P. address of the server .You can check the DNS records like A record,C name record ,MX record,D name,MX records etc.. details at Whoisxy.com
