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: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

NXX: 928

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-928 A Newton MA NWTNMAWARP0  9102 VERIZON NEW ENGLAND INC. 128      
617-928 0 Newton MA   9102 VERIZON NEW ENGLAND INC. 128      
617-928 1 Newton MA   9102 VERIZON NEW ENGLAND INC. 128      
617-928 2 Newton MA   9102 VERIZON NEW ENGLAND INC. 128      
617-928 3 Newton MA   9102 VERIZON NEW ENGLAND INC. 128      
617-928 4 Newton MA   9102 VERIZON NEW ENGLAND INC. 128      
617-928 5 Newton MA   318J COMCAST IP PHONE, LLC 128   2014-03-24   
617-928 6 Newton MA   9102 VERIZON NEW ENGLAND INC. 128      
617-928 7 Newton MA   9102 VERIZON NEW ENGLAND INC. 128      
617-928 8 Newton MA   073H TELNYX LLC 128   2017-03-10   
617-928 9 Newton MA   9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.