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: 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
202-222 0 Washington Zone 1 DC   236   2002-05-25   
202-249 3 Washington Zone 1 DC   236   2002-10-21   
202-249 4 Washington Zone 1 DC   236   2002-10-21   
202-249 5 Washington Zone 1 DC   236   2002-10-21   
202-355 9 Washington Zone 1 DC   236   2006-03-12   
202-464 A Washington Zone 1 DC WASHDCRKDS3  236      
202-489 0 Washington Zone 1 DC   236   2006-03-12   
202-600 7 Washington Zone 1 DC   236   2010-05-30   

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

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