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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OCN: 538H WIDE VOICE, LLC - DC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
202-666 A Washington Zone 1 DC WASHDCSWFMD  236      
202-666 6 Washington Zone 1 DC WASHDCSWFMD  236   2021-11-13   
202-851 A Washington Zone 1 DC WASHDCSWFMD  236      
202-851 1 Washington Zone 1 DC WASHDCSWFMD  236   2016-02-04   
202-988 8 Washington Zone 1 DC WASHDCSWFMD  236   2024-02-10   
771-333 A Washington Zone 1 DC WASHDCSWFMD  236      
771-333 3 Washington Zone 1 DC WASHDCSWFMD  236   2022-05-23   
771-888 A Washington Zone 1 DC WASHDCSWJMD  236      
771-888 8 Washington Zone 1 DC WASHDCSWJMD  236   2021-12-31   

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

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