ASP – covers Application Service Providers (ASPs), firms that offer a range of software applications on a hosted and subscription basis

BLECs – covers Building Local Exchange Carriers (BLECs), firms that focus on providing communications services to multiple tenants on a building-by-building basis

BPL – covers carriers providing telecommunications services using Broadband Over Powerline (BPL) technology that allows data transmission via electric power lines; formerly Utilities in Telecom

Broadband Wireless – covers carriers utilizing microwave or millimeter wave spectrum below 6 GHz to deliver high-bandwidth service to large areas

Cable Broadband & Telephony –  covers cable television operators offering data and telecommunications services in competition with established telecom carriers

Cable Video – covers Cable Multiple System Operators (MSOs), large cable companies operating network systems in multiple markets, typically as nationally or regionally competitive operators offering traditional television service, broadband internet access and, in some cases, VoIP

Canadian CLECs – covers Canadian Competitive Local Exchange Carriers (CLECs), facilities-based telecom service providers offering services in direct competition with Canada's incumbent telecom carriers

CIOCs – covers Competitive Independent Operating Companies (CIOCs), firms that provide competitive telecommunications service outside their designated exchange boundaries

CLECs – covers Competitive Local Exchange Carriers (CLECs), firms that provide switched local services in competition with the Incumbent Local Exchange Carriers as an alternative for local transport of private line, special access, and interstate transport of switched access telecommunications services

DSL – covers carriers deploying Digital Subscriber Line (DSL) technology to deliver high bandwidth over conventional copper wiring at limited distances

Fixed Wireless  –  covers carriers utilizing microwave or millimeter wave spectrum above 10 GHz to deliver high-bandwidth telecom service

ILECs – covers Independent Local Exchange Carriers (ILECs), firms that provide telephone service within designated exchange boundaries, serving as an incumbent provider as licensed by the state public service commission

IPTV (Competitive video providers) – covers providers of Internet Protocol Television (IPTV), a digital television service delivered using the same protocols used to transmit internet traffic

ISPs – covers Internet Service Providers (ISPs), firms that provide internet connectivity and access to business and residential end-users

Metro Ethernet – covers carriers providing carrier-grade Ethernet service within metro areas; formerly Gigabit Ethernet/Metropolitan Area Network services

Paid Content – covers digital entertainment, news, and media content available for a fee to consumers using a variety of network-accessible devices
 
Satellite – covers internet access via satellite technologies, for use by mobile users or in locations where traditional wired or wireless internet access is unavailable
 

Special Access – covers service providers which offer dedicated (switchless) circuits between two points, one of which is usually a long-distance POP

VoIP – covers carriers offering Voice over Internet Protocol (VoIP), voice communications services delivered over the Internet by using IP as the underlying transmission protocol

WiFi/WiMAX – covers firms offering Wireless Fidelity (WiFi) services-- a wireless technology that provides network access across short distances -- and Worldwide Interoperability Microwave Access (WiMAX) services -- a wireless technology that provides network access over wider areas

Wireline Broadband Providers – covers carriers a range of bandwidth-extensive metro access solutions to customers accessing the public telecommunications network