Local Calling Guide

Area code/prefix search

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

NXX: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-343 A Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-343 0 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-05-07   
857-343 1 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-05-07   
857-343 2 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-05-07   
857-343 3 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-06-26   
857-343 4 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-343 5 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-343 6 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-343 7 Boston MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2019-10-12   
857-343 8 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2018-06-16   
857-343 9 Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128   2018-08-02   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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