Area code split: Difference between revisions

Revision as of 00:04, 18 September 2024

Latest revision as of 00:07, 18 September 2024

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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 early 1990s, the [[North American Numbering Plan Administrator]] (NANPA) 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]] of local calls for customers of both area codes 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.<ref>{{Cite report |url=https://www.nationalnanpa.com/reports/2021_NANPA_Annual_Report.pdf |title=2021 NANPA Annual Report |last=North American Numbering Plan Administrator |date=March 2022}}</ref>

==See also==