What is detariffing?
The FCC required that U.S. Common Carriers, including MCI Communications Services, Inc. d/b/a Verizon Business Services (Verizon Business), no longer file and maintain tariffs for state-to-state and international telecom services. This occurred on July 31, 2001, in most cases. After detariffing, state-to-state (interstate) and international tariffs no longer apply, and the agreements between carriers and their customers rely entirely on contracts between carriers and their customers. Some states have also detariffed certain services as shown in the table at this link: Table of States.
