Local Calling Guide

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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-666 A Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-666 0 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-07-27   
857-666 1 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-07-27   
857-666 2 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-07-27   
857-666 3 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-07-27   
857-666 4 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-07-27   
857-666 5 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-22   
857-666 6 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-05-22   
857-666 7 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-07-27   
857-666 8 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-07-27   
857-666 9 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2015-07-27   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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