The World Wide Web uses unique numbers called IP addresses and every unit or site that is part of the Web contains this kind of an address. It would be pretty hard to remember to visit 18.104.22.168 to load a website though, so a significantly simpler structure was created in the 80s - domains. Each domain name consists of a main part as well as an extension, for instance domain.com or domain.co.uk. Plenty of extensions exist worldwide - some of them are assigned to countries, for example .co.uk in the aforementioned example, which is assigned to the United Kingdom, while others are generic, such as .com or .net. Various extensions are available for registration by every entity and some others have precise requirements - company registration, local presence, etcetera. You'll be able to get a new domain name from a registrar firm like ours and when the extension supports domain transfers, you will be able to move an existing domain name between registrars too.