To get a .gov domain, you must follow certain rules. You need to be a U.S. government worker or help a government group. Only official government groups can have .gov domains. Checking if they have power means looking at things carefully. This makes sure the domain is only registered by those who are truly linked to the government. For example, federal, state, local, tribal, and territory government agencies are included in this group. The United States census office gives a clear explanation of who works in the government or public sector.