Reports
This page provides access to reports prepared by NANPA for the North American Numbering Council and others.
NPA Reports
The area served by the NANP is divided into Numbering Plan Areas (NPAs), each identified by a three-digit NPA code, commonly called an area code. The reports include information about the assignment and availability of NPA codes as well as projected NPA exhaust dates.
Central Office Code Reports
Central office codes, also known as exchanges, prefixes, or simply NXXs, are digits 4, 5 and 6 of a ten-digit geographic NANP telephone number. The reports that provide information about the assignment and availability of central office codes by geographic area code.
NRUF Reports
Twice each year NANPA collects, stores and maintains number resource utilization and forecast data. This process is called Numbering Resource Utilization/Forecast (NRUF) Reporting. The reports that examine current and previous NPA forecast projections, actual central office growth with forecasted growth, and aggregated CO growth rates and utilization rates.
5YY NXX Reports
PCS 5YY numbers are used for "follow me" personal communication services. Personal communications service is defined more formally as "a set of capabilities that allows some combination of personal mobility, terminal mobility, and service profile management."
900 NXX Reports
900 numbers are used for premium services, The cost of each 900 call, which depends on the service, is billed to the calling party.
Carrier Identification Codes
Carrier identification codes (CICs) are used to route and bill calls in the public switched telephone network. CICs are four-digit codes in the format XXXX, where X is any digit from 0 through 9. Separate CIC pools are maintained for Feature Group B (line side) access and Feature group D (trunk side) access.
555 Line Numbers
555 numbers are in the format 555-XXXX. The line number (XXXX) indicates the particular information service.
NANPA Annual Report
Each year, NANPA publishes its annual report. The report provides a general overview of the North American Numbering Plan and the status of all of the numbering resources administered by the NANPA. It summarizes the NPA relief planning efforts undertaken in the year as well as NRUF activities. Detailed NANPA performance measurements are also included. NPA assignment information, including dialing plans, is provided in the report. Finally, the report captures the relevant events and activities that impacted number administration.
NANC Report
NANPA provides ongoing reports to the North American Numbering Council (NANC), a Federal Advisory Committee to the Federal Communications Commission. At each NANC meeting, NANPA provides an overview of NPA and central office code assignment and relief activity. In addition, these reports contain information on current topics of interest to the NANC.
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