Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 576

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-576 A Brookline MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-576 0 Brookline MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-576 1 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   
857-576 2 Brookline MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-576 3 Brookline MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-576 4 Brookline MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-576 5 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-09-14   
857-576 6 Brookline MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2014-09-29   
857-576 7 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-10-06   
857-576 8 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-23   
857-576 9 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-10-11   

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

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