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: 475

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-475 A Westboro MA WSBOMASUDS1  9102 VERIZON NEW ENGLAND INC. 128      
508-475 0 Westboro MA WRCSMACEX1X  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2003-04-08   
508-475 1 Westboro MA LWRNMACAX5X  8468 FREEDOM RING COMMUNICATIONS, LLC 128   2006-08-22   
508-475 2 Westboro MA WSBOMASUDS1  9102 VERIZON NEW ENGLAND INC. 128      
508-475 3 Westboro MA WSBOMASUDS1  9102 VERIZON NEW ENGLAND INC. 128      
508-475 4 Westboro MA WSBOMASUDS1  9102 VERIZON NEW ENGLAND INC. 128      
508-475 5 Westboro MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2002-03-27   
508-475 6 Westboro MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2006-10-06   
508-475 7 Westboro MA BSTPMALLRMD  8345 GLOBAL CROSSING LOCAL SERVICES, INC. - MA 128   2005-02-01   
508-475 8 Westboro MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2021-10-11   
508-475 9 Westboro MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.