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  1. Area codes 608 and 353 are telephone area codes in the North American Numbering Plan for much of southwestern Wisconsin, including the state capital city Madison. Area code 608 was assigned in 1955 to a numbering plan area created from areas with area code 414 and area code 715, and was the third area code created in Wisconsin.

  2. From a page move: This is a redirect from a page that has been moved (renamed).This page was kept as a redirect to avoid breaking links, both internal and external, that may have been made to the old page name.

  3. The 600–699 range of area codes in Mexico is reserved for the states of Baja California, Baja California Sur, Chihuahua, Durango, Sinaloa, and Sonora. The country code of Mexico is +52. For other areas, see Area codes in Mexico by code.

  4. The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes ( NPA codes, or area codes ), consisting of three digits that are prefixed to each local telephone number having seven digits.

    • Telephone Number Structure
    • International Numbering Plan
    • Private Numbering Plan
    • Numbering Plan Indicator
    • Subscriber Dialing Procedures
    • See Also
    • External Links

    National or regional telecommunication administrations that are members of the International Telecommunication Union (ITU) use national telephone numbering plans that conform to international standard E.164. E.164 specifies that a telephone number consist of a country code and a national telephone number. National telephone numbers are defined by n...

    The E.164 standard of the International Telecommunication Union is an international numbering plan and establishes a country calling code (country code) for each member organization. Country codes are prefixes to national telephone numbers that denote call routing to the network of a subordinate number plan administration, typically a country, or g...

    Like a public telecommunications network, a private telephone network in an enterprise or within an organizational campus may implement a private numbering plan for the installed base of telephones for internal communication. Such networks operate a private switching system or a private branch exchange (PBX) within the network. The internal numbers...

    Signaling in telecommunication networks is specific to the technology in use for each link. During signaling, it is common that additional information is passed between switching systems that is not represented in telephone numbers, which serve only as network addresses of endpoints. One such information element is the numbering plan indicator (NPI...

    While a telephone numbering plan specifies the digit sequence assigned to each telephone or wire line, establishing the network addresses needed for routing calls, numbering plan administrators may define certain dialing procedures for placing calls. This may include the dialing of additional prefixes necessary for administrative or technical reaso...

  5. Area code 603 is the sole area code for the U.S. state of New Hampshire in the North American Numbering Plan (NANP). It was created as one of the original 86 numbering plan areas in October 1947.

  6. Hace 5 días · 608 is an area code located in the state of Wisconsin, US. The largest city it serves is Madison. Location, time zone and map of the 608 area code