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: 343

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

Last updated: Sat, 31 Oct 2020 19:28:10 UTC

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