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: SOVLMAAB6MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
351-221 A Lowell MA 939H COMMIO LLC 128   2021-11-20   
781-868 A Weymouth MA 939H COMMIO LLC 128   2021-11-25   
857-388 A Somerville MA 939H COMMIO LLC 128   2021-11-25   
857-443 A Boston MA 939H COMMIO LLC 128      

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

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