Specialuse

Special-use is a generic label used across different domains to designate resources, locations, or data that have a designated purpose or restricted use. It typically signals that normal access or operation rules do not apply and that specific permissions, licenses, or compliance are required.

In the Domain Name System, special-use domain names are reserved for non-public use. RFC 6761 defines names with special meanings not intended to be resolvable on the global internet, such as localhost, example, invalid, private, and test. They help prevent conflicts and aid testing or demonstration.

In land management, special-use areas or permits designate lands or facilities reserved for particular activities, such as government operations, research, or recreation, under overlays that control access, duration, and permitted activities. Compliance with specific rules is required to use or access these areas.

In aviation, Special Use Airspace designates areas where activities may be hazardous or restricted, including Prohibited, Restricted, Military Operations Areas, Warning Areas, Alert Areas, and Controlled Firing Areas. Pilots may need authorization or must avoid the airspace during active operations.

Designation as special-use typically involves regulatory or organizational processes to define purpose, boundaries, access rights, and obligations. Users should consult the governing authorities or official documentation to understand the exact requirements and restrictions that apply in a given context.