Domain name extensions are categories of Internet domain names and there are several of them to choose from.
For example .com represents the word “commercial,” and is the most widely used extension in the world. Most businesses prefer a .com domain name because it is a highly recognized symbol for having a business presence on the Internet
The official list of all top-level domains is maintained by the Internet Assigned Numbers Authority (IANA) at the Root Zone Database
In this infographic made by us at Oasdom.com, you’ll find ten generic top-level domains that were created early in the development of the Internet.