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: 228 [Rate centres in NPA 228] [Dial plan for NPA 228]

NXX: 351

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
228-351 A Gulfport MS GLPTMS54X6X  4886 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 484      
228-351 6 Gulfport MS BILXMSEDX1X  458C TELEPORT COMMUNICATIONS AMERICA MS - LLC 484   2019-11-18   
228-351 7 Gulfport MS BILXMSEDX1X  458C TELEPORT COMMUNICATIONS AMERICA MS - LLC 484   2019-11-18   
228-351 8 Gulfport MS BILXMSEDX1X  458C TELEPORT COMMUNICATIONS AMERICA MS - LLC 484   2019-11-18   
228-351 9 Gulfport MS GLPTMS54X6X  4886 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 484   2014-04-29   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.