Verizon Communications Inc., commonly known as Verizon, is an American multinational telecommunications conglomerate and a corporate component of the Dow. Across carriers. ADCs are provisioned separately for mobile networks versus landline networks. The most commonly known examples are emergency telephone numbers. Numbers for major incumbent landline carriers: 958, as a three-digit number in many former NYNEX/Bell Atlantic areas, now Verizon or FairPoint. Original on April 27, 2014. United States Court of Appeals. Verizon v. Federal Communications Commission, January 14, 2014 The Obama White House, President. Number of landline phones dropped by 828, 000 within the span of two months to a total of 284. 3 million. The primary regulator of communications, in particular. Via email. Generally, prepaid conference call services are used with a landline telephone, mobile phone, or computer, and there is no need to buy additional.