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The Domain Name System acts like a phone book for the Internet by translating IP addresses into user-friendly computer hostnames, or domain names, which are the suffixes found at the end of website URLs.
Represents the word "commercial," and is the most widely used extension in the world.
Was originally intended for sites related to the Internet, but now used for a variety of sites.
Originally intended for non-commercial "organizations", but now used for a wide variety of sites.
Used for educational institutions like universities and colleges.
Used for business sites, usually small businesses.
Used for U.S. Government sites, formerly only federal government but later expanded to state and local.
Used for U.S. Military sites, including army, navy, air force, etc.
Used for registering organisations established by international treaties between or among national governments.