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.

NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 747

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-747 A Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-747 0 Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-747 1 Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-747 2 Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-747 3 Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-747 4 Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-747 5 Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-747 6 Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      
240-747 7 Washington Zone 11 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-747 8 Washington Zone 11 MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-747 9 Washington Zone 11 MD WASHDC12OMD  4820 CAVALIER EAST, LLC - MD 236      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.