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: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-623 A Foxboro MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
508-623 0 Foxboro MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
508-623 1 Foxboro MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
508-623 2 Foxboro MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
508-623 3 Foxboro MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
508-623 4 Foxboro MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
508-623 5 Foxboro MA   892D ONVOY, LLC - MA 128      
508-623 6 Foxboro MA   892D ONVOY, LLC - MA 128      
508-623 7 Foxboro MA   892D ONVOY, LLC - MA 128      
508-623 8 Foxboro MA   892D ONVOY, LLC - MA 128      
508-623 9 Foxboro MA   892D ONVOY, 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.