ERF Wireless, Inc. provides critical infrastructure wireless broadband communications products and services to residential, oil and gas, educational, health care and regional banks in rural areas. Its services include broadband, voice over Internet protocol (VOIP) telephone and facsimile service, and video security. The Company operates through four segments: Energy Broadband (EBI), Wireless Bundled Services (WBS), Enterprise Network Services (ENS) and Zona Resources (ZNR). EBI provides wireless connectivity to rural oil and gas locations primarily via Mobile Broadband Trailers (MBTs). EBI segment provides wireless broadband products and services. WBS segment provides wireless broadband products and services to commercial and individual customers throughout the wireless industry. ENS segment provides product and service to operate encrypted wireless banking network business. ZNR segment acquires oil and gas lease acreage in oil and gas production areas of the United States.