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: SPFDMAWONMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
413-291 A Springfield MA 624H ONVOY SPECTRUM, LLC 126      
413-440 A Huntington MA 624H ONVOY SPECTRUM, LLC 126   2021-01-04   
413-558 A Warren MA 624H ONVOY SPECTRUM, LLC 126   2021-01-04   
413-767 A Russell MA 624H ONVOY SPECTRUM, LLC 126   2021-01-04   

Last updated: Mon, 24 May 2021 01:28:43 UTC

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