Area code split: Difference between revisions

Revision as of 21:29, 24 June 2023

Revision as of 14:46, 20 September 2023

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In [[telecommunications]], an '''area code split''' is the practice of introducing a new telephone [[area code]] by geographically dividing an existing [[numbering plan area]] (NPA), and assigning area codes to the resulting divisions, but retaining the existing area code only for one of the divisions. The purpose of this practice is to provide more [[central office prefix]]es, and therefore more [[telephone number]]s, in an area with high demand for telephone services, and prevent a shortage of telephone numbers.

An increasing demand for telephone numbers has existed since the development of automatic telephony in the early 20th century, but was spurred especially since the 1990s, with the proliferation of fax machines, pager systems, mobile telephones, computer modems, and, finallyeventually, [[smart phone]]s.

When an area code split is implemented, the telephone numbers in the affected area are typically changed to a new area code only, but this still requires the printing of new stationery, advertisements, and signage for many customers, and the dissemination of the new area code to family, friends, and customers. Computer systems, and telephone equipment may require updates in address books, and for speed dialing.