Local Calling Guide

Area code/prefix search

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Charlestown, MA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
857-971 2 BRTNMACOVMD  7135 TC SYSTEMS, INC. 128   2016-06-20   
857-971 3 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-08-05   
857-971 4 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-08-05   
857-971 5 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-06-08   
857-971 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-06-08   
857-971 7 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-06-08   
857-971 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-08-05   
857-971 9   515J IP HORIZON LLC 128   2017-07-02   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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