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: 355

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-355 A Everett MA CMBSMA013MD  428H AIRUS, INC. - MA 128      
857-355 0 Everett MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-355 1 Everett MA CMBSMA013MD  428H AIRUS, INC. - MA 128      
857-355 2 Everett MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-355 3 Everett MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-355 4 Everett MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-355 5 Everett MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-355 6 Everett MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-355 8 Everett MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-355 9 Everett MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.