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: 983

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-983 A Westboro MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
508-983 0 Westboro MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
508-983 1 Westboro MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
508-983 2 Westboro MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
508-983 3 Westboro MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128   2004-10-01   
508-983 4 Westboro MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2006-02-03   
508-983 6 Westboro MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128   2005-07-30   
508-983 7 Westboro MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2005-07-30   
508-983 8 Westboro MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2005-07-30   
508-983 9 Westboro MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2005-07-30   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.