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: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 639

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-639 A Southgate MA CMBRMAWA0MD  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
508-639 0 Southgate MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
508-639 1 Southgate MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
508-639 2 Southgate MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-639 3 Southgate MA BSTPMALLOMD  073H TELNYX LLC 128      
508-639 4 Southgate MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
508-639 5 Southgate MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-639 6 Southgate MA CMBRMAWA0MD  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
508-639 8 Southgate MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
508-639 9 Southgate MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.