Local Calling Guide

Area code/prefix search

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

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-338 A Boston MA   7135 TC SYSTEMS, INC. 128   2018-03-26   
857-338 0 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-03-27   
857-338 1 Boston MA   6101 COMCAST PHONE OF MASSACHUSETTS, INC. - MA 128   2018-12-12   
857-338 2 Boston MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128   2018-03-27   
857-338 3 Boston MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128   2018-03-27   
857-338 4 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-12-19   
857-338 5 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-12-19   
857-338 6 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-12-19   
857-338 7 Boston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2018-12-12   
857-338 8 Boston MA   7135 TC SYSTEMS, INC. 128   2018-03-26   
857-338 9 Boston MA   7135 TC SYSTEMS, INC. 128   2018-03-26   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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