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: GNFDMACHDS0

Remotes:

Switch Switch name Switch type
ASFDMAMARS1  ASHFIELD  RSC 
BRNRMACHRS1  BERNARDSTON  RSC 
CHMTMASORS1  CHARLEMONT  RSC 
CLRNMAYARS1  COLRAIN  RSC 
MLFLMACRRS1  MILLERS FALLS  RSC 
MTAGMACERS1  MONTAGUE  RSC 
NRFDMAMARS1  NORTHFIELD  RSC 
ORNGMASMRS0    RS 
SLFLMACRRS1  SHELBURNE FALLS  RSC 
TRFLMAAARS1  TURNERS FALLS  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
413-772 A Greenfield MA 9102 VERIZON NEW ENGLAND INC. 126      
413-773 A Greenfield MA 9102 VERIZON NEW ENGLAND INC. 126      
413-774 A Greenfield MA 9102 VERIZON NEW ENGLAND INC. 126      
413-775 A Greenfield MA 9102 VERIZON NEW ENGLAND INC. 126      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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