Exhibit 21 Subsidiary Jurisdiction Ownership interest of incorporation NTELOS Cable Inc. Virginia Registrant owns 100% NTELOS Cable of Virginia Inc. Virginia Registrant owns 100% NTELOS Communications Services Inc. Virginia Registrant owns 100% NTELOS Cornerstone Inc. Virginia Registrant owns 100% NTELOS Licenses Inc. Virginia Registrant owns 100% NTELOS Network Inc. Virginia Registrant owns 100% NTELOS PCS Inc. Virginia Registrant owns 100% NTELOS Telephone Inc. Virginia Registrant owns 100% NTELOS Wireless Inc. Virginia Registrant owns 100% NTELOS of Pennsylvania Inc. Virginia Registrant owns 100% NTELOS of Maryland Inc. Virginia Registrant owns 100% NTELOS of Kentucky Inc. Virginia Registrant owns 100% NTELOS NetAccess Inc. Virginia Registrant owns 100% NA Communications Inc. Virginia NetAccess owns 100% Virginia RSA 6 Cellular Limited Ptrshp. Virginia NTELOS Wireless owns 84%; Registrant owns 16% Richmond 20 MHz, LLC Delaware Virginia RSA 6 Cellular Limited Ptrshp. owns 100% R&B Communications, Inc. Virginia Registrant owns 100% Botetourt Leasing, Inc. Virginia R&B Communication owns 100% Roanoke & Botetourt Telephone Co. Virginia R&B Communication owns 100% R&B Cable, Inc. Virginia R&B Communication owns 100% R&B Network, Inc. Virginia R&B Communication owns 100% The Beeper Company Virginia R&B Communication owns 100% Virginia PCS Alliance, L.C. Virginia NTELOS PCS owns 65%; R&B Communications owns 26% Virginia Telecommunications Ptrshp. Virginia NTELOS Network owns 50%; R&B Network owns 50% West Virginia PCS Alliance, L.C. Virginia Registrant owns 45%; R&B Communications owns 34%