Interchangeable NPA and central office codes
id:
interchangeable-npa-and-central-office-codes-270-18118353
title:
Interchangeable NPA and central office codes
text:
In the North American Numbering Plan (NANP), interchangeable NPA and central office codes constituted a change in numbering plan design and policy, to mitigate exhaustion of the numbering resources of the ten-digit telephone numbers used in the closed numbering plan of the NANP. Interchangeable numbering plan area (NPA) codes and central office codes are codes that permit any of the ten numerals in the middle position of the area code and the central office code, which both are three-digit numbe
brand slug:
wiki
category slug:
encyclopedia
description:
North American telephone numbering
original url:
https://en.wikipedia.org/wiki/Interchangeable_NPA_and_central_office_codes
date created:
date modified:
2023-07-12T03:17:19Z
main entity:
{"identifier":"Q17068221","url":"https://www.wikidata.org/entity/Q17068221"}
image:
fields total:
13
integrity:
14