Within the North American Numbering Plan (NANP), certain codes have been assigned for use in providing Toll-Free Services. The "assigned" codes include 800, 888, 877, 866, 855, 844, 833 and 822. Currently, 800, 888, 877, 866, 855, 844, and 833 are in use. The remaining code of 822 is reserved for future growth and expansion. The 7 active Toll-Free codes contain certain NPA-NXX combinations that have been ‘closed’ for various reasons. If an NPA-NXX combination has been designated as "closed", no numbers within that code may be used for providing Toll-Free services within the NANP area. The tables below provide lists of the "closed" codes within each of the Toll-Free NPAs as well as a brief explanation as to why the code has been designated as "closed". All codes not listed as "closed" are open and therefore available for use. Please Note: Toll-Free Numbers 800-555-0199 and 888-555-0199 are utilized by the entertainment industry in movies and television programming.
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Closed NXXs in the 800, 888, 877, 866, 855, 844, 833 NPAs |
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Closed NXX(s) |
Comment |
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000-199 |
The 000-199 NXXs are closed for NANP consistency. |
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555 |
The 555 NXX in these NPAs has been closed, based on agreement by the SMS/800 Number Administration Committee (SNAC). SNAC took this action based on the open FCC docket discussion assignment of 888-555-1212. |
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911 |
The 911 NXX is closed to avoid confusion with Emergency (911) services. |
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Other Closed NXXs in the 800 NPA |
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Closed NXX(x) |
Comment |
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415, 703, 740, 904 |
The 415, 703, 740, 904 NXXs are reserved for use in the Dominican Republic, US Virgin Islands, and future Caribbean assignment. |
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271, 389, 534, 623, 744, 751, 907 |
The 271, 389, 534, 623, 744, 751, 907 NXXs are reserved for use in Trinidad and Tobago, the Bahamas, Barbados, the Dominican Republic, and other areas within the 809 NPA. |