Local Calling Guide

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Westford, MA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
978-850 4 NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2014-12-05   
978-850 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-03-14   
978-850 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-03-14   
978-850 7 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2025-12-14   
978-850 8 SOVLMAABKMD  616J LEAP TELECOM, LLC 128   2023-03-11   
978-850 9   145J TERRA NOVA TELECOM INC. 128   2023-11-16   
978-923 A BSTPMALLDS3  892D ONVOY, LLC - MA 128   2025-04-03   
978-923 0   145J TERRA NOVA TELECOM INC. 128   2025-10-31   
978-923 1 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-11-03   
978-923 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-07-01   
978-923 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
978-923 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2005-08-13   
978-923 9 CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2020-05-31   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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