What is a DNS?

November 24, 2011 by  Filed under: Domain 

The abbreviation known as DNS stands for domain name servers. They are an important but invisible part of the Internet. But first let me tell you a little bit about domain names…

A domain name is what appears on the address bar of an Internet page such as example.com. It is the address of the website that you are visiting. Your domain name is highly important to the success of your website; for a start your domain name should reflect what your business is about. So if you are in the business of selling phones your domain name should ideally have the word phone in it. This is because if someone conducts a search for phones your website will have more of a chance of appearing if you have this keyword in the address of your website.

New domain names are usually registered through the registrar for annual terms with a minimum of one year. The maximum length of prepaid registration is often 10 years, but varies depending on the policies of the sponsoring registry of the top-level domain under which registration is sought. Registration periods may be extended, usually at any time, until the end of a grace period after the registration expiration date. Domain names should also be kept short and should be something that is easy to remember so that people will be more likely to type your websites address into their browser.

Your domain name doesn’t actually appear as words, well it does to us but the actual name of your website is a 32 bit number, for example 199.249.130.4. Every website on the Internet has a number like this, they are known as the sites IP address. As well as every site having an IP address, every computer that is connected to the Internet also has their own IP address. The reason that these IP addresses are changed into words is simply down to the fact that words are easier to remember. It is difficult to remember IP addresses, especially with how many IP addresses there actually are. Think about all of the sites that you visit daily, if these sites were all named with numbers would you be able to remember them all? The vast majority of us certainly couldn’t!

So when you type a websites address into your browser why doesn’t it appear as numbers, how does the computer find the site you are looking for? This is where a domain name server comes in. A domain name server converts the IP address of websites into words. The flexibility of the domain name system allows multiple IP addresses to be assigned to a single domain name, or multiple domain names to be services from a single IP address. This means that one server may have multiple roles (such as hosting multiple independent websites), or that one role can be spread among many servers. One IP address can also be assigned to several servers, as used in any cast networking.

To find out more information about domain name servers get in touch with a web hosting company today.

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