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: 799

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-799 A Cambridge MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-799 0 Cambridge MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-05-20   
857-799 1 Cambridge MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-25   
857-799 2 Cambridge MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-12-06   
857-799 3 Cambridge MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-12-06   
857-799 4 Cambridge MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2022-10-21   
857-799 5 Cambridge MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-27   
857-799 6 Cambridge MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-27   
857-799 7 Cambridge MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-27   
857-799 8 Cambridge MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-27   
857-799 9 Cambridge MA CMBRMABEQMD  321J HD CARRIER LLC 128   2018-12-29   

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

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