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: WASHDCSWNMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-920 A Washington Zone 1 DC 321J HD CARRIER LLC 236      
202-920 9 Washington Zone 1 DC 321J HD CARRIER LLC 236   2019-03-30   
202-968 A Washington Zone 1 DC 321J HD CARRIER LLC 236      
202-968 8 Washington Zone 1 DC 321J HD CARRIER LLC 236   2020-12-05   
202-968 9 Washington Zone 1 DC 321J HD CARRIER LLC 236   2020-12-05   

Last updated: Sat, 30 Sep 2023 22:09:11 UTC

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