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: CNCRMAWADS0

Remotes:

Switch Switch name Switch type
LTTNMAKIRS1  LITTLETON 3  5ER 
MYNRMAWARS1  MAYNARD  EXM 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
978-280 A Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-287 A Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-318 A Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-369 A Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-371 A Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-451 3 Concord MA 9102 VERIZON NEW ENGLAND INC. 128   2006-10-23   
978-963 A Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 0 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 1 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 2 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 3 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 4 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 5 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 6 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 7 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      
978-963 9 Concord MA 9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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