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: 243

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
228-243 A Biloxi MS GLPTMSATX4X  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484      
228-243 0 Biloxi MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484      
228-243 1 Biloxi MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484      
228-243 2 Biloxi MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484      
228-243 3 Biloxi MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484      
228-243 4 Biloxi MS   6396 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 484   2005-07-17   
228-243 5 Biloxi MS   6396 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 484   2005-09-08   
228-243 6 Biloxi MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484   2006-12-22   
228-243 7 Biloxi MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484   2006-12-22   
228-243 8 Biloxi MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484      
228-243 9 Biloxi MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.