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.

OCN: 1960 ATX TELECOMMUNICATIONS SERVICES, LTD-VA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
202-247 A Washington Zone 1 DC HRNDVACKDS0  236      
202-247 9 Washington Zone 1 DC   236      
571-224 0 Washington Zone 19 VA   236   2003-03-14   
571-283 6 Herndon VA   236   2003-03-14   
571-438 A Washington Zone 8 VA HRNDVACKDS0  236      
571-438 6 Washington Zone 8 VA   236      
571-594 5 Washington Zone 17 VA   236   2003-03-14   
571-722 1 Washington Zone 17 VA   236   2006-11-18   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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