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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-271 A Dorchester MA   6664 SPRINT SPECTRUM L.P. 128      
857-271 0 Dorchester MA   6664 SPRINT SPECTRUM L.P. 128   2013-08-12   
857-271 1 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-15   
857-271 2 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-15   
857-271 3 Dorchester MA   6101 COMCAST PHONE OF MASSACHUSETTS, INC. - MA 128   2013-10-03   
857-271 4 Dorchester MA   892D ONVOY, LLC - MA 128   2014-10-12   
857-271 5 Dorchester MA   892D ONVOY, LLC - MA 128   2014-10-12   
857-271 6 Dorchester MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2014-12-15   
857-271 7 Dorchester MA   7575 CENTURYLINK COMMUNICATIONS LLC 128   2014-04-30   
857-271 8 Dorchester MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2014-04-30   
857-271 9 Dorchester MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2014-04-30   

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

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