Aeroplane
A generic top-level domain gTLD used on the Internet’s Domain Name System.
It is the first gTLD based on a single industry, and is reserved for aviation-related businesses.
It was created in 2002 and is operated by SITA. There is also a Dot Aero Council created and controlled by SITA, which SITA supposedly consults on .aero policies.
The .aero domain is reserved for companies, organizations, associations, government agencies, and individuals in aviation and related industries.
Currently, two-letter codes under .aero are reserved for airlines according to the IATA Airline Designators, while three-letter codes are reserved for airports, according to the IATA airport codes.