A geographical boundary within which no two telephones will have the same seven-digit number. "N" is any number between two and nine, "P" is always one or zero; and "A" is any number excluding zero. (2) Area code.
An NPA is the 3-digit code that occupies the A, B, and C positions in the 10-digit NANP format that applies throughout the area served by the NANP. NPAs are of the form NXX, where N represents the digits 2-9 and X represents any digit 0-9. In the NANP, NPAs are classified as either geographic or non-geographic.
A geographic area identified in the North American numbering plan (NANP) by a unique three-digit area code.
Numbering Plan Areas - North American "Area Codes." (3 digits: 2-to-9, 0-or-1, 0-to-9. Middle digit to expand soon)
Numbering Plan Area The first 3 digits of your 10 digit North American phone number.
Number Plan Area (area code)
Numbering Plan Area (Area Code)
A geographic subdivision of the territory covered by a national or integrated numbering plan. An NPA is identified by a distinctive area code.
The first three (3) digits in the 10 digit dialing pattern required to identify the location of the local calling area. (941) 625-1396 The numbers are usually within parenthesis.