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: 351

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-351 A Goffstown NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-351 0 Goffstown NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-07-01   
603-351 1 Goffstown NH MNCHNHNI9MD  5562 METROPCS, INC. 122   2017-03-31   
603-351 2 Goffstown NH MNCHNHCOX9Y  2698 CTC COMMUNICATIONS CORP. - NH 122   2005-11-12   
603-351 3 Goffstown NH MNCHNHCOX9Y  4286 LIGHTSHIP TELECOM, LLC - NH 122   2001-09-10   
603-351 4 Goffstown NH   145J TERRA NOVA TELECOM INC. 122   2021-12-11   
603-351 5 Goffstown NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122   2008-10-28   
603-351 6 Goffstown NH   6386 BELL ATLANTIC MOBILE, INC 122   2024-04-24   
603-351 7 Goffstown NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2023-04-27   
603-351 8 Goffstown NH MNCHNHNI9MD  5562 METROPCS, INC. 122   2005-11-26   
603-351 9 Goffstown NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.