1 EXHIBIT 21.1 SUBSIDIARIES OF LEAP WIRELESS INTERNATIONAL, INC. DATE OF ACQUISITION NAME OR ORGANIZATION COUNTRY - ---------------------------------------------- ------------------- --------------------------- QUALCOMM Telecommunications Limited September 23, 1998 Cayman Islands Metrosvyaz Limited September 23, 1998 Cypress QUALCOMM Telecommunications Limited September 23, 1998 Isle of Man Orrengrove Investments Limited September 23, 1998 Cypress Transworld Telecommunications (Bermuda), Ltd. September 23, 1998 Bermuda Transworld Telecommunications, Inc. September 23, 1998 Delaware Transworld Telecommunications Services, Inc. September 23, 1998 Delaware Inversiones Leap Wireless Chile S.A. September 23, 1998 Chile Chilesat Telefonia Personal S.A. September 23, 1998 Chile Leap PCS Mexico, Inc. September 23, 1998 California Leap Wireless Mexico, S.A. de C.V. October 8, 1998 Mexico Pegaso Telecomunicaciones, S.A. de C.V. September 23, 1998 Mexico Pegaso Comunicaciones y Sistemas, S.A. de C.V. September 23, 1998 Mexico Pegaso PCS, S.A. de C.V. September 23, 1998 Mexico Pegaso Humanos Recursos, S.A. de C.V. September 23, 1998 Mexico OzPhone Pty Ltd. September 23, 1998 New South Wales, Australia Chase Telecommunications Holdings, Inc. September 23, 1998 Delaware Chase Telecommunications, Inc. September 23, 1998 Delaware Cricket Holdings, Inc. August 26, 1998 Delaware Cricket Communications, Inc. August 26, 1998 Delaware