Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 384

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-384 A Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-384 0 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-384 1 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-384 2 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-03-26   
857-384 3 Brighton MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-11   
857-384 4 Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-09-18   
857-384 5 Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-09-18   
857-384 6 Brighton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-09-18   
857-384 7 Brighton MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-11   
857-384 8 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-10-24   
857-384 9 Brighton MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-03-26   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.