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: 253

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-253 A Cambridge MA CHTWMABMAMD  2899 BROADVIEW NETWORKS, INC. - MA 128      
857-253 0 Cambridge MA CHTWMABMAMD  2899 BROADVIEW NETWORKS, INC. - MA 128      
857-253 1 Cambridge MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-09-09   
857-253 2 Cambridge MA CHTWMABMAMD  2899 BROADVIEW NETWORKS, INC. - MA 128      
857-253 3 Cambridge MA SOVLMAAB6MD  939H COMMIO, LLC 128   2024-03-04   
857-253 4 Cambridge MA SOVLMAAB6MD  939H COMMIO, LLC 128   2024-03-04   
857-253 5 Cambridge MA SOVLMAAB6MD  939H COMMIO, LLC 128   2024-03-04   
857-253 6 Cambridge MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-12-30   
857-253 7 Cambridge MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-12-30   
857-253 8 Cambridge MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2009-08-04   
857-253 9 Cambridge MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2010-06-14   

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

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