Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 978 [Rate centres in NPA 978] [Dial plan for NPA 978]

NXX: 456

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-456 A Harvard MA HRVRMALIRP0  9102 VERIZON NEW ENGLAND INC. 128      
978-456 0 Harvard MA   792K CHARTER IP ENABLED SERVICES, LLC 128   2005-01-01   
978-456 1 Harvard MA   508J CENTURYLINK COMMUNICATIONS, LLC 128   2013-09-30   
978-456 2 Harvard MA   9102 VERIZON NEW ENGLAND INC. 128      
978-456 3 Harvard MA   9102 VERIZON NEW ENGLAND INC. 128      
978-456 4 Harvard MA   515J IP HORIZON LLC 128   2002-03-04   
978-456 5 Harvard MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-03   
978-456 6 Harvard MA   145J TERRA NOVA TELECOM INC. 128   2024-02-03   
978-456 7 Harvard MA   9102 VERIZON NEW ENGLAND INC. 128      
978-456 8 Harvard MA   9102 VERIZON NEW ENGLAND INC. 128      
978-456 9 Harvard MA   9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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