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: 756G WIDE VOICE, LLC - MA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
339-207 1 Lynn MA CMBRMABEZMD  128   2016-05-12   
413-661 A Springfield MA   126   2026-09-30   
413-661 1 Springfield MA   126   2026-09-30   
413-661 2 Springfield MA   126   2026-09-30   
857-957 A Boston MA CMBRMABEZMD  128      
857-957 1 Boston MA CMBRMABEZMD  128   2014-11-21   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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