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: 217

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-217 A Dorchester MA NRTNMAAACM4  5562 METROPCS, INC. 128      
857-217 0 Dorchester MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-217 1 Dorchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2010-03-15   
857-217 2 Dorchester MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-217 3 Dorchester MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128   2002-05-11   
857-217 4 Dorchester MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-217 5 Dorchester MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-12-05   
857-217 6 Dorchester MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-12-05   
857-217 7 Dorchester MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-12-05   
857-217 8 Dorchester MA NRTNMAAACM4  5562 METROPCS, INC. 128   2011-12-05   
857-217 9 Dorchester MA   145J TERRA NOVA TELECOM INC. 128   2024-02-08   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.