1 EXHIBIT 21 SUBSIDIARIES OF NEXTEL COMMUNICATIONS, INC. (as of March 1, 2000) - ----------------------------------------------------------------------------------------------------------- CORPORATION JURISDICTION OF INCORPORATION - ----------------------------------------------------------------------------------------------------------- Airfone Holdings, Inc. DE - ----------------------------------------------------------------------------------------------------------- Arrendadora de Equipos Telecommunicaciones S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Art Consult Global International S.A. British Virgin Is. - ----------------------------------------------------------------------------------------------------------- Butler Gorge Interntional Corp. British Virgin Is. - ----------------------------------------------------------------------------------------------------------- CellCall, Inc. DE - ----------------------------------------------------------------------------------------------------------- Comercializadora Protel S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Comunicacion Integral San Luis S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Comunicaciones Nextel de Mexico, S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Dial Call Midwest, Inc. DE - ----------------------------------------------------------------------------------------------------------- Domestic USF Corp. DE - ----------------------------------------------------------------------------------------------------------- FCI 900 DE - ----------------------------------------------------------------------------------------------------------- Fonotransportes Nacionales S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Fort Worth Trunked Radio Limited Partnership TX - ----------------------------------------------------------------------------------------------------------- Gamboa Holdings, Inc. Philippines - ----------------------------------------------------------------------------------------------------------- H-Telecom Ltda. Brazil - ----------------------------------------------------------------------------------------------------------- Master-Tec Industria e Comercio de Productos Electronicos Ltda. Brazil - ----------------------------------------------------------------------------------------------------------- McCaw International (Brazil), Ltd. VA - ----------------------------------------------------------------------------------------------------------- Multifon S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- NextNet Co., Ltd. Japan - ----------------------------------------------------------------------------------------------------------- NextServe, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel S.A. Brazil - ----------------------------------------------------------------------------------------------------------- NCI 700, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel 3G Acquisition Ltd. United Kingdom - ----------------------------------------------------------------------------------------------------------- Nextel 220 License Acquisition Corp. DE - ----------------------------------------------------------------------------------------------------------- Nextel Argentina, S.R.L. Argentina - ----------------------------------------------------------------------------------------------------------- Nextel Aviation, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel of California, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel Communications of the Mid-Atlantic, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel Communications Philippines Inc. Philippines - ----------------------------------------------------------------------------------------------------------- Nextel Finance Company DE - ----------------------------------------------------------------------------------------------------------- Nextel International (Argentina) LLC Cayman Is. - ----------------------------------------------------------------------------------------------------------- Nextel International (Argentina), Ltd. Cayman Is. - ----------------------------------------------------------------------------------------------------------- Nextel International (Delaware), Ltd. DE - ----------------------------------------------------------------------------------------------------------- Nextel International (Holdings), Ltd. Cayman Is. - ----------------------------------------------------------------------------------------------------------- Nextel International, Inc. WA - ----------------------------------------------------------------------------------------------------------- Nextel International (Indonesia) LLC Cayman Is. - ----------------------------------------------------------------------------------------------------------- Nextel International Investment Company DE - ----------------------------------------------------------------------------------------------------------- Nextel International (Japan), Ltd. DE - ----------------------------------------------------------------------------------------------------------- 2 EXHIBIT 21 - ----------------------------------------------------------------------------------------------------------- CORPORATION JURISDICTION OF INCORPORATION - ----------------------------------------------------------------------------------------------------------- Nextel International (Mexico), Ltd. DE - ----------------------------------------------------------------------------------------------------------- Nextel International (Peru) LLC Cayman Is. - ----------------------------------------------------------------------------------------------------------- Nextel International (Philippines) LLC Cayman Is. - ----------------------------------------------------------------------------------------------------------- Nextel International (Services),Ltd. DE - ----------------------------------------------------------------------------------------------------------- Nextel License Acquisition Corp. DE - ----------------------------------------------------------------------------------------------------------- Nextel License Holdings 1, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel License Holdings 2, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel License Holdings 3,Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel License Holdings 4, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel de Mexico S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Nextel of New York, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel Operations, Inc. DE - ----------------------------------------------------------------------------------------------------------- Nextel del Peru, S.A. Peru - ----------------------------------------------------------------------------------------------------------- Nextel Socal, Inc. CA - ----------------------------------------------------------------------------------------------------------- Nextel South Corp. GA - ----------------------------------------------------------------------------------------------------------- Nextel Spectrum Acquisition Corp. DE - ----------------------------------------------------------------------------------------------------------- Nextel Systems Corp. DE - ----------------------------------------------------------------------------------------------------------- Nextel Telecomunicacoes Ltda. Brazil - ----------------------------------------------------------------------------------------------------------- Nextel of Texas, Inc. TX - ----------------------------------------------------------------------------------------------------------- Nextel Unrestricted Relocation Corp. DE - ----------------------------------------------------------------------------------------------------------- Nextel West Corp. DE - ----------------------------------------------------------------------------------------------------------- Nextel WIP Corp. DE - ----------------------------------------------------------------------------------------------------------- Nextel WIP Expansion Corp. DE - ----------------------------------------------------------------------------------------------------------- NXLD Company DE - ----------------------------------------------------------------------------------------------------------- Promobile Telecomunicacoes Ltda. Braziil - ----------------------------------------------------------------------------------------------------------- Radiophone S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Servicios de Radiocomunicacion Movil de Mexico S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Servicios Protel S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Shanghai CCT - McCaw Telecomunications Systems Co., Ltd. Peoples Republic of China - ----------------------------------------------------------------------------------------------------------- Shanghai GSM Project Peoples Republic of China - ----------------------------------------------------------------------------------------------------------- Sistemas de Comunicaciones Troncales S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Telecomunicacoes Brastel, S.A. de C.V., Ltda. Brazil - ----------------------------------------------------------------------------------------------------------- Telemobile Telecomunicacoes Ltda. Brazil - ----------------------------------------------------------------------------------------------------------- Teletransportes Nacionales, S.A. de C.V. Mexico - ----------------------------------------------------------------------------------------------------------- Top Mega Enterprises Limited Hong Kong - ----------------------------------------------------------------------------------------------------------- Tower Analog Sub, Inc. DE - ----------------------------------------------------------------------------------------------------------- Tower Parent Corp. DE - ----------------------------------------------------------------------------------------------------------- Unrestricted Subscriber Equipment Leasing Company, Inc. DE - ----------------------------------------------------------------------------------------------------------- Unrestricted Subsdidiary Funding Company DE - ----------------------------------------------------------------------------------------------------------- Unrestricted UMTS Funding Company DE - -----------------------------------------------------------------------------------------------------------