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: WASHDCSWMMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-703 A Washington Zone 1 DC 624H ONVOY SPECTRUM, LLC 236   2022-01-09   
202-890 A Washington Zone 1 DC 624H ONVOY SPECTRUM, LLC 236      
202-995 A Washington Zone 1 DC 624H ONVOY SPECTRUM, LLC 236   2021-11-14   
240-259 A Hughesville MD 624H ONVOY SPECTRUM, LLC 236   2021-06-25   
240-717 A Leonardtown MD 624H ONVOY SPECTRUM, LLC 236   2021-06-25   
240-768 A Nanjemoy MD 624H ONVOY SPECTRUM, LLC 236   2021-06-25   
240-884 A Tompkinsville MD 624H ONVOY SPECTRUM, LLC 236   2021-06-28   
571-573 A Nokesville VA 624H ONVOY SPECTRUM, LLC 236   2021-06-25   
571-574 A Washington Zone 17 VA 624H ONVOY SPECTRUM, LLC 236   2021-06-25   
571-710 A Lorton VA 624H ONVOY SPECTRUM, LLC 236   2021-04-07   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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