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.

Switch: MCLNVA23DS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-495 A Washington Zone 1 DC 6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2008-07-11   
240-754 A Waldorf MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2012-01-02   
301-710 A Waldorf MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-02-20   
571-388 A Washington Zone 8 VA 8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      
571-421 A Washington Zone 17 VA 8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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