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.

OCN: 6386 BELL ATLANTIC MOBILE, INC

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
603-991 6 Littleton NH   122   2008-02-07   
603-991 7 Littleton NH   122   2008-07-03   
603-991 8 Littleton NH   122   2007-09-17   
603-991 9 Littleton NH   122   2006-12-02   
603-998 0 Laconia NH   122   2008-05-02   
603-998 3 Laconia NH   122   2007-04-02   
603-998 4 Laconia NH   122   2007-06-01   
603-998 6 Laconia NH   122   2009-03-07   
603-998 7 Laconia NH   122   2010-02-16   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.