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: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-439 A Billerica MA BLRCMAANRP0  9102 VERIZON NEW ENGLAND INC. 128      
978-439 0 Billerica MA   145J TERRA NOVA TELECOM INC. 128   2022-11-01   
978-439 1 Billerica MA   9102 VERIZON NEW ENGLAND INC. 128      
978-439 2 Billerica MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-04-28   
978-439 3 Billerica MA   9102 VERIZON NEW ENGLAND INC. 128      
978-439 4 Billerica MA   9102 VERIZON NEW ENGLAND INC. 128      
978-439 5 Billerica MA   145J TERRA NOVA TELECOM INC. 128   2024-09-09   
978-439 6 Billerica MA   892D ONVOY, LLC - MA 128   2022-09-25   
978-439 7 Billerica MA   508J CENTURYLINK COMMUNICATIONS, LLC 128   2014-06-20   
978-439 8 Billerica MA   9102 VERIZON NEW ENGLAND INC. 128      
978-439 9 Billerica MA   9102 VERIZON NEW ENGLAND INC. 128      

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

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