The World Wide Web employs unique numbers identified as IP addresses and each device or site that is a part of the Web features such an address. It would be pretty hard to remember to go to 22.214.171.124 to open a website though, so a much easier system was made in the 80s - domain names. Every single domain is made of a main part and an extension, to give an example domain.com or domain.co.uk. Various extensions exist globally - some of them are assigned to countries, for example .co.uk in the abovementioned example, which is assigned to the United Kingdom, while various others are generic, for example .com or .net. A number of extensions are available for registration by any entity and some others have specific requirements - company registration, regional presence, etc. You are able to obtain a brand new domain from a registrar company like ours and if the extension supports transfers, you'll be able to transfer an existing domain name between registrars as well.