Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.


NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
940-253 A Bowie TX WCFLTXNIXMX  548      
940-253 1 Bowie TX   548   2018-05-20   
940-276 9 Wichita Falls TX   548   2021-06-13   
940-538 9 Henrietta TX   548   2018-09-13   
940-928 6 Bellevue TX   548   2022-05-06   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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