A top-level domain (TLD) is the part of a domain name after the dot. This represents the highest level of the domain. For example, the top-level domain of the domain www.ionos.co.uk is .uk.
There are two types of top-level domains:
- Country-specific top-level domains: (e.g. .de, .uk, or .us)
- Generic top-level domains (e.g. .net, .com, .org, .info)
The requirements for country-specific top-level domains vary from country to country. For the top-level domain .uk, for example, the domain owner must have a private address or company address in the United Kindom. For .co.uk or .org.uk addresses however, there is no such geographical requirement.