A Top-level domain (TLD) refers to the last segment of a domain name or the part that follows immediately after the "dot" symbol. Top-level domains are mainly classified into two categories: generic TLDs and country-specific TLDs. Examples of some of the popular TLDs include .com, .org, .net, .gov, .biz and .edu.
A top-level domain recognises a certain element regarding the associated website, such as its objective (business, government, education), its owner, or the geographical area from which it originated. Each TLD includes an independent registry controlled by a specific organisation, which is managed under the guidance of the Internet Corporation for Assigned Names and Numbers