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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-826 A Belmont MA BSTNMACODS6  8345 GLOBAL CROSSING LOCAL SERVICES, INC.-MA 128      
617-826 0 Belmont MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-826 1 Belmont MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-01   
617-826 2 Belmont MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-826 3 Belmont MA   8345 GLOBAL CROSSING LOCAL SERVICES, INC.-MA 128      
617-826 4 Belmont MA   7421 AT&T LOCAL 128   2003-11-30   
617-826 5 Belmont MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2005-07-13   
617-826 6 Belmont MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128   2006-06-09   
617-826 7 Belmont MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-826 8 Belmont MA   892D ONVOY, LLC - MA 128   2020-03-25   
617-826 9 Belmont MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.