The World Wide Web employs unique numbers known as IP addresses and every unit or website that is a part of the Web has such an address. It is pretty difficult to remember to go to 123.123.123.123 to load a website though, so a significantly quicker structure was introduced in the 80s - domains. Every single domain name includes a main part plus an extension, for instance domain.com or domain.co.uk. A wide range of extensions exist globally - some of them are assigned to countries, like .co.uk in the aforementioned example, which is assigned to the United Kingdom, while many others are generic, like .com or .net. Some extensions are available for registration by every entity and some others have particular requirements - company registration, regional presence, etcetera. You can acquire a new domain from a registrar firm such as ours and if the extension allows domain transfers, you will be able to relocate an existing domain between registrars too.