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: 410

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-410 A Charlestown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-410 0 Charlestown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-410 1 Charlestown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-410 2 Charlestown MA BSTPMALLOMD  073H TELNYX LLC 128      
857-410 3 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-410 4 Charlestown MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-410 5 Charlestown MA CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128      
857-410 6 Charlestown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-410 7 Charlestown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-410 8 Charlestown MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
857-410 9 Charlestown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.