Local Calling Guide

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NPA: 978 [Rate centres in NPA 978] [Dial plan for NPA 978]

NXX: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-579 A Sudbury MA SDBRMABPRP1  9102 VERIZON NEW ENGLAND INC. 128      
978-579 0 Sudbury MA   9102 VERIZON NEW ENGLAND INC. 128      
978-579 1 Sudbury MA   892D ONVOY, LLC - MA 128   2010-03-15   
978-579 2 Sudbury MA   9102 VERIZON NEW ENGLAND INC. 128      
978-579 3 Sudbury MA   892D ONVOY, LLC - MA 128   2012-03-22   
978-579 4 Sudbury MA   318J COMCAST IP PHONE, LLC 128   2014-09-15   
978-579 6 Sudbury MA   9102 VERIZON NEW ENGLAND INC. 128      
978-579 7 Sudbury MA   145J TERRA NOVA TELECOM INC. 128   2026-01-11   
978-579 8 Sudbury MA   9102 VERIZON NEW ENGLAND INC. 128      
978-579 9 Sudbury MA   9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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