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.

Switch: BILXMSATIMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
228-225 A Pass Christian MS 490J DISH WIRELESS, LLC 484      
228-225 9 Pass Christian MS 490J DISH WIRELESS, LLC 484   2023-01-19   
228-279 A Gulfport MS 490J DISH WIRELESS, LLC 484      
228-279 9 Gulfport MS 490J DISH WIRELESS, LLC 484   2022-03-04   
228-696 3 Pascagoula MS 490J DISH WIRELESS, LLC 484   2022-12-15   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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