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: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 707

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-707 A Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-707 0 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-04-11   
603-707 1 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-03-04   
603-707 2 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-10-02   
603-707 3 Meredith NH MNCHNHCOX9Y  2698 CTC COMMUNICATIONS CORP. - NH 122   2006-07-31   
603-707 4 Meredith NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-707 5 Meredith NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2006-09-17   
603-707 6 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-09-01   
603-707 7 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-01-02   
603-707 8 Meredith NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2004-11-15   
603-707 9 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-02-06   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.