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- The NPA, commonly known as the area code, is a three-digit numerical prefix that identifies a specific geographic region within North America. The NXX, on the other hand, refers to the three-digit central office code, often denoting a particular exchange within the designated area.
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Feb 28, 2024 · Together, the NPA-NXX denotes the original carrier and central office switch assigned to a particular number. Historically, NPA-NXX combinations provided a reliable way to determine the carrier and approximate location of a number.
- North American Numbering Plan
- Lerg
- Maps
- Special Use NPA
- Potentially Premium Rate Npas
- Toll-Free Special Use Npas
- Carrier Identification Codes
- See Also
The North American Numbering Plan (NANP) governs the management of telephone numbers for the Public Switched Telephone Networks in North America (Canada, USA, Carribean, and territories) within the international country code prefix ‘+1’. North American phone numbers are in the format (where N is any digit from 2-9, and X from 0-9): NPA-NXX-XXXX Spe...
The North American numbering plan is available in a data base called the LERG maintained by Telcordia. The LERG has data for every switch and central office in the North American telephone network. Copies of the LERG can be purchased from Telcordia. LERG info is constantly changing, so most users subscribe to periodic updates. Subsets of the inform...
Maps are available that show Central Office locations, local calling areas, and other information Mapquest will generate a map show the approximate Central Office location if you invoke it with a URL like this: http://www.mapquest.com/maps/map.adp?areacode=702&exchange=939 change the area code and exchange values to match the NPA-NXX you want to di...
900-NXX-XXXX–premium rate numbers, prices vary700-NXX-XXXX–defined by long distance carrier, one generally calls 1-700-555-4141 toll-free to identify the carrier500-NXX-XXXX–personal communication services (follow me)533-NXX-XXXX–was reserved for expansion of personal communication services, but the reservation has been withdrawn800-NXX-XXXX888-NXX-XXXX877-NXX-XXXX866-NXX-XXXXAlso known as CIC codes, PIC codes, Dial-Around Numbers, 1010 Numbers, 101XXXX Codes, etc. 1. See Carrier Identification Codes
This lookup uses the North American NPA NXX Wire Center Edition Database and supplemental data to find the Wire Center, Rate Center, locality, LATA, carrier, and other details associated with any United States or Canadian NPA NXX combination.
Oct 30, 2023 · NPA and NXX are standard industry terms that you may hear thrown around a lot when ordering or porting phone numbers. What is NPA? NPA stands for Numbering Plan Area. It's often used interchangeably with the area code, which is a three-digit number that identifies the phone service region.
The North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably Mexico, do not participate with the NANP.
- 1
- 011
- +1 NXX NXX-XXXX
Understanding the area code (NPA) and central office code (NXX) reveals how your phone connects to the world, provide surprising insights, and impact your daily experiences – from avoiding wrong numbers to choosing the perfect neighborhood.
Assist with call ratings. Report on traffic usage. Identify wireless numbers. Record originating or terminating rate centers and wire centers. Determine if a call is inter- or intraLATA. Other NPA-NXX Data Collection Options.
