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.
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Switch: BTVLMD18GT6

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-826 A Washington Zone 1 DC 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-200 A Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-224 A Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-02-05   
227-233 A Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-04-08   
240-519 A Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-541 A Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
301-202 A Washington Zone 2 MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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