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: WASHDCSWSMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-443 1 Washington Zone 1 DC 551G NUSO, LLC 236      
202-740 9 Washington Zone 1 DC 551G NUSO, LLC 236      
202-773 A Washington Zone 1 DC 551G NUSO, LLC 236      
202-773 1 Washington Zone 1 DC 551G NUSO, LLC 236      
202-773 2 Washington Zone 1 DC 551G NUSO, LLC 236      
202-773 3 Washington Zone 1 DC 551G NUSO, LLC 236      
202-831 A Washington Zone 1 DC 551G NUSO, LLC 236      
202-831 1 Washington Zone 1 DC 551G NUSO, LLC 236      
202-840 8 Washington Zone 1 DC 551G NUSO, LLC 236      
202-866 1 Washington Zone 1 DC 551G NUSO, LLC 236      
202-866 2 Washington Zone 1 DC 551G NUSO, LLC 236      
202-866 3 Washington Zone 1 DC 551G NUSO, LLC 236      
202-866 4 Washington Zone 1 DC 551G NUSO, LLC 236      
202-866 5 Washington Zone 1 DC 551G NUSO, LLC 236      
202-890 1 Washington Zone 1 DC 551G NUSO, LLC 236      
202-891 4 Washington Zone 1 DC 551G NUSO, LLC 236      
202-891 5 Washington Zone 1 DC 551G NUSO, LLC 236      
202-960 2 Washington Zone 1 DC 551G NUSO, LLC 236      
202-960 3 Washington Zone 1 DC 551G NUSO, LLC 236      
202-963 3 Washington Zone 1 DC 551G NUSO, LLC 236      
202-963 4 Washington Zone 1 DC 551G NUSO, LLC 236      
202-963 5 Washington Zone 1 DC 551G NUSO, LLC 236      
202-963 6 Washington Zone 1 DC 551G NUSO, LLC 236      
202-963 7 Washington Zone 1 DC 551G NUSO, LLC 236      
202-980 A Washington Zone 1 DC 551G NUSO, LLC 236      
202-980 1 Washington Zone 1 DC 551G NUSO, LLC 236      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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