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 OCN LATA LIR Eff date Disc date
228-280 A Biloxi MS 7421 AT&T - LOCAL 484      
228-281 A Pascagoula MS 7421 AT&T - LOCAL 484      
228-282 A Ocean Springs MS 7421 AT&T - LOCAL 484      
228-299 A Pearlington MS 7421 AT&T - LOCAL 484      
228-574 A Gulfport MS 7421 AT&T - LOCAL 484      

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

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