Skip Navigation

Federal Communications Commission

English Display Options


Numbering Resource Utilization in the U.S. (As of 12/31/00)

In recent years, a rapidly increasing demand for telephone numbers in a competitive environment has required numerous area code splits, overlays, and other number optimization measures.  In this report, we summarize the second systematic collection of comprehensive data on the utilization of telephone numbers within the United States.  The underlying information was acquired from carriers holding numbering resources and analyzed as part of our ongoing assessment of the efficacy of numbering resource optimization measures prescribed by the Commission’s recent NRO Orders.  In general, the reported data show that, of the roughly one billion numbers held by U.S. carriers that reported utilization data on their numbering resources, about 40% are assigned to subscribers and in active use, about 50% are available for use, and the remaining 10% are dedicated to administrative and other purposes. Also, numbering resource utilization rates are rising, and carriers are voluntarily returning millions of numbers so that they can be assigned to other carriers.

Download Report


You are leaving the FCC website

You are about to leave the FCC website and visit a third-party, non-governmental website that the FCC does not maintain or control. The FCC does not endorse any product or service, and is not responsible for, nor can it guarantee the validity or timeliness of the content on the page you are about to visit. Additionally, the privacy policies of this third-party page may differ from those of the FCC.