Local Calling Guide

Area code/prefix search

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

NXX: 523

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-523 A Somerville MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-523 0 Somerville MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-523 1 Somerville MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-523 2 Somerville MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-523 3 Somerville MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
857-523 4 Somerville MA   321J HD CARRIER LLC 128      
857-523 5 Somerville MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-523 6 Somerville MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-523 7 Somerville MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
857-523 8 Somerville MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-523 9 Somerville MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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