Telephone Numbers in The United States

Telephone Numbers In The United States

The North American Numbering Plan (NANP) is an integrated telephone numbering plan that encompasses 24 countries and territories primarily in North America and the Caribbean.

The NANP is a standardized system of numbering plan areas (NPA) using telephone numbers consisting of three-digit area code, a three-digit central office code, and a four-digit station number. Through this plan, telephone calls can be directed to particular regions of the larger NANP public switched telephone network (PSTN), where they are further routed by the local networks. The NANP is administered by the North American Numbering Plan Administration (NANPA), a service operated by Neustar corporation. The international calling code for the NANP is 1. Not all North American countries participate in the NANP.

Read more about Telephone Numbers In The United States:  History, Numbering System, Expansion, NANP Countries and Territories, Toll Charges, Dial Plans, Alphabetic Mnemonic System, Cellular Services, Fictional Telephone Numbers, See Also

Famous quotes containing the words united states, telephone, numbers, united and/or states:

    Ethnic life in the United States has become a sort of contest like baseball in which the blacks are always the Chicago Cubs.
    Ishmael Reed (b. 1938)

    The telephone gives us the happiness of being together yet safely apart.
    Mason Cooley (b. 1927)

    Green grow the rushes-O
    What is your one-O?
    —Unknown. Carol of the Numbers (l. 2–3)

    Greece is a sort of American vassal; the Netherlands is the country of American bases that grow like tulip bulbs; Cuba is the main sugar plantation of the American monopolies; Turkey is prepared to kow-tow before any United States pro-consul and Canada is the boring second fiddle in the American symphony.
    Andrei Andreyevich Gromyko (1909–1989)

    Since the Civil War its six states have produced fewer political ideas, as political ideas run in the Republic, than any average county in Kansas or Nebraska.
    —H.L. (Henry Lewis)