Area code split: Difference between revisions

Revision as of 21:34, 9 May 2023

Revision as of 21:29, 24 June 2023

Line 17:

Not withstanding the desire for long-term stability of the local numbering plan and customer understanding, rapid growth in some areas has resulted in many splits within just a few years.

As a result, in the mid-1990s, the [[North American Numbering Plan]] Administrator introduced another method for exhaustion relief: the area code overlay. This method assigns multiple area codes to the same numbering plan area, so that existing subscribers can keep established telephone numbers. Only new accounts and extra lines receive telephone numbers with the new area code. This method requires [[ten-digit dialing]] for customers of both area codes, even for local calls. Since 2007, most territories use overlays for mitigating numbering shortages. Most area code relief plans today do not even consider splits as relief options, limiting options to overlay plans.<ref>{{Cite report |url=https://www.nationalnanpa.com/reports/2021_NANPA_Annual_Report.pdf {{Bare|title=2021 NANPA Annual Report |last=North American Numbering Plan URLAdministrator PDF|date=MayMarch 2022}}</ref>

==See also==