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
857-309 A Dorchester MA   892D ONVOY, LLC - MA 128      
857-309 0 Dorchester MA   892D ONVOY, LLC - MA 128   2015-02-13   
857-309 1 Dorchester MA   892D ONVOY, LLC - MA 128   2015-02-13   
857-309 2 Dorchester MA   892D ONVOY, LLC - MA 128   2015-02-13   
857-309 3 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-02-23   
857-309 4 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-02-23   
857-309 5 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-02-23   
857-309 6 Dorchester MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2015-09-18   
857-309 7 Dorchester MA   6101 COMCAST PHONE OF MASSACHUSETTS, INC. - MA 128   2015-09-29   
857-309 8 Dorchester MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2015-09-18   
857-309 9 Dorchester MA   756G WIDE VOICE, LLC - MA 128   2015-06-19   

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

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