Non-starship-based Starfleet facility serving as support and administrative base for Starfleet operations in a specified area. Most starbases are designated by number (Starbase 21) or classification and number (Starbase Deep Space Nine), though some are designated by name (Farspace Starbase Earhart) or location (Starbase Lya III). Starbases are usually space-based installations, though some are planetside facilities or a mix of both.