What is a restricted top-level domain (rTLD)?
Some top-level domains are restricted, such as .aero, .biz, .edu, .mil, .museum, .name, and .pro. This does not mean these TLDs cannot be used, but they require the registrant to represent a certain type of entity or to belong to a certain community. For example, .name is reserved for individuals, .edu is reserved for educational entities, and .mil is reserved for the military.