Learn all about the Different types of Domain Name

 

Domain Names are categorised into different tiers, with ‘top-level’ domain names typically relating to geographic entities which the user might want to be associated with – .CO.UK (United Kingdom), .IE (Ireland), .ES (Spain) etc, plus the well-known .COM, .ORG, .EDU etc.

Each of these top-level-domains is commonly referred to as a “TLD” (Top Level Domain).

Different types of Domain Name: Non-Geographical

Beyond that, we now have a whole array of new domains which have been created to meet market demand as the web becomes more popular and more crowded. New secondary-level domains include .LONDON and .SPORT for example.

Within each top-level domain, all of the domain names must be unique. For example there cannot be two websites with the domain name thewebputsimply.com. However there can be two distinct websites – one with the domain name thewebutsimply.com, and the second with thewebputsimply.co.uk.

Google Tablet

Domain Name Servers

Domain Name Servers (DNS) are the server machines dedicated to mapping domain names to IP addresses. A DNS will accept requests from web users, programmes, and other name servers. When a new request arrives, the DNS server is able to do any one of four things with it:

  • Determine the correct IP address to map to, and provide this in answer to the incoming request – if it already knows the IP address required,
  • If it doesn’t already know the right IP address – contact another DNS server (or multiple) to try to find it,
  • If it can’t find the right IP address itself or through it’s peer network of DNS servers – answer the request to say “I don’t know that address, but here’s where you can go to find out more…”,
  • Or if the domain name is invalid or simply doesn’t exist it will return an error message to state as much.

Once a DNS has successfully resolved the Domain Name with the correct IP address, it will then fetch the website files hosted on the servers at that address.