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: WASJDCDBDS1

Remotes:

Switch Switch name Switch type
FRDRMDOSRS0    RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-266 A Washington Zone 1 DC 4249 CAVALIER EAST LLC - DC 236      
202-443 A Washington Zone 1 DC 4249 CAVALIER EAST LLC - DC 236   2008-09-13   
202-454 A Washington Zone 1 DC 4249 CAVALIER EAST LLC - DC 236      
202-587 A Washington Zone 1 DC 4249 CAVALIER EAST LLC - DC 236      
240-207 A Damascus MD 4820 CAVALIER EAST LLC - MD 236      
240-320 A Waldorf MD 4820 CAVALIER EAST LLC - MD 236      
240-333 A Washington Zone 2 MD 4820 CAVALIER EAST LLC - MD 236      
240-339 A Washington Zone 15 MD 4820 CAVALIER EAST LLC - MD 236      
240-364 A Gaithersburg MD 4820 CAVALIER EAST LLC - MD 236      
240-387 A Washington Zone 13 MD 4820 CAVALIER EAST LLC - MD 236      
240-494 A Washington Zone 3 MD 4820 CAVALIER EAST LLC - MD 236      
240-646 A Laurel MD 4820 CAVALIER EAST LLC - MD 236      
240-724 A Washington Zone 6 MD 4820 CAVALIER EAST LLC - MD 236      
240-737 A Washington Zone 4 MD 4820 CAVALIER EAST LLC - MD 236      
240-747 A Washington Zone 11 MD 4820 CAVALIER EAST LLC - MD 236      
240-767 A Washington Zone 5 MD 4820 CAVALIER EAST LLC - MD 236      
240-779 A Ashton MD 4820 CAVALIER EAST LLC - MD 236      
240-864 A Washington Zone 10 MD 4820 CAVALIER EAST LLC - MD 236      
240-868 A Washington Zone 12 MD 4820 CAVALIER EAST LLC - MD 236      
240-929 A Washington Zone 14 MD 4820 CAVALIER EAST LLC - MD 236      
240-949 A Washington Zone 16 MD 4820 CAVALIER EAST LLC - MD 236      
571-514 A Herndon VA 4820 CAVALIER EAST LLC - MD 236      
571-748 A Washington Zone 19 VA 4155 CAVALIER EAST LLC - VA 236      
571-749 A Washington Zone 17 VA 4155 CAVALIER EAST LLC - VA 236      
571-931 A Triangle VA 4155 CAVALIER EAST LLC - VA 236      
571-932 A Lorton Metro VA 4155 CAVALIER EAST LLC - VA 236      
571-933 A Dulles Metro VA 4155 CAVALIER EAST LLC - VA 236      
571-934 A Dulles VA 4155 CAVALIER EAST LLC - VA 236      
703-565 A Dale City VA 4155 CAVALIER EAST LLC - VA 236      
703-576 A Occoquan VA 4155 CAVALIER EAST LLC - VA 236      
703-600 A Washington Zone 8 VA 4155 CAVALIER EAST LLC - VA 236      
703-654 A Washington Zone 19 VA 4155 CAVALIER EAST LLC - VA 236      
703-666 A Washington Zone 8 VA 4155 CAVALIER EAST LLC - VA 236      
703-686 A Manassas VA 4155 CAVALIER EAST LLC - VA 236      
703-688 A Lorton VA 4155 CAVALIER EAST LLC - VA 236      
703-770 A Washington Zone 17 VA 4155 CAVALIER EAST LLC - VA 236      
703-773 A Herndon VA 4155 CAVALIER EAST LLC - VA 236      
703-788 A Washington Zone 19 VA 4155 CAVALIER EAST LLC - VA 236      
703-797 A Washington Zone 8 VA 4155 CAVALIER EAST LLC - VA 236      
703-839 A Washington Zone 17 VA 4820 CAVALIER EAST LLC - MD 236      
703-871 A Herndon VA 4155 CAVALIER EAST LLC - VA 236      
703-896 A Washington Zone 19 VA 4820 CAVALIER EAST LLC - MD 236      
703-970 A Washington Zone 17 VA 4155 CAVALIER EAST LLC - VA 236      

Last updated: Wed, 10 Apr 2019 01:22:05 UTC

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