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  2. Feature group - Wikipedia

    en.wikipedia.org/wiki/Feature_group

    The original batch of carrier codes began with 0, so this type of "dial around" service was typically marketed as dial-around 1010-xxx service. NANPA maintains separate lists of carrier codes for feature groups 'B' and 'D' [7] as not all long-distance providers support both standards. These Feature Group alternatives allowed the LEC's end users ...

  3. Toll-free telephone numbers in the North American Numbering ...

    en.wikipedia.org/wiki/Toll-free_telephone...

    Some geographic area codes are similar to the toll-free codes, e.g., 801, 818, 860. Toll-free numbers are also sometimes confused with 900-numbers, for which the telephone company bills the callers at rates far in excess of long-distance service rates for services such as recorded information or live chat.

  4. Long-distance calling - Wikipedia

    en.wikipedia.org/wiki/Long-distance_calling

    Interstate long-distance or inter-LATA interstate long-distance, the most common group, is the one for which long-distance carriers are usually chosen by telephone customers. Another form of long-distance call, increasingly relevant to more U.S. states, is known as an inter-LATA intrastate long-distance call. This refers to a calling area ...

  5. List of mobile virtual network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  6. North American Numbering Plan - Wikipedia

    en.wikipedia.org/wiki/North_American_Numbering_Plan

    101-xxxx — Carrier access code for selecting an alternative long-distance carrier; xxxx is the carrier identification code (CIC). 211 — local community information or social services (in some cities) 311 — city government or non-emergency police matters

  7. Interexchange carrier - Wikipedia

    en.wikipedia.org/wiki/Interexchange_carrier

    The interexchange carrier to which calls from a subscriber line are routed by default is known as the presubscribed interexchange carrier (PIC). To give telephone users the possibility of opting for a different carrier on a call-by-call basis, carrier access codes (CAC) were devised. These consist of the digits 101 followed by the four-digit CIC.

  8. Mobile network codes in ITU region 3xx (North America)

    en.wikipedia.org/wiki/Mobile_network_codes_in...

    This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.

  9. Telephone numbering plan - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbering_plan

    In many areas of the NANP, the domestic trunk code (long-distance access code) must also be dialed along with the area code for long-distance calls even within the same numbering plan area. For example, to call a number in Regina in area code 306: 306 xxx xxxx — within Regina, Lumsden and other local areas