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.

Hampstead, NH

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
603-329 A HMPSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-329 0 HMPSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-329 1 MNCHNHCOX9Y  2698 CTC COMMUNICATIONS CORP. - NH 122   2001-09-24   
603-329 2 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2018-10-08   
603-329 3 MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-329 4 HMPSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-329 5 HMPSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-329 6 HMPSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-329 7 HMPSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-329 8 HMPSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-329 9 HMPSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-362 A ATSNNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-362 0 MNCHNHCOX9Y  4286 LIGHTSHIP TELECOM, LLC - NH 122   2001-03-26   
603-362 1 PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2005-06-15   
603-362 2 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2009-02-02   
603-362 3 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2016-06-01   
603-362 4 ATSNNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-362 5 ATSNNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-362 6 ATSNNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-362 7 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2013-10-01   
603-362 8 ATSNNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-362 9 ATSNNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-453 A MNCHNHCO37Z  7421 AT&T - LOCAL 122      
603-453 0 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2020-11-26   
603-453 1 MNCHNHCO23Z  073H TELNYX LLC 122   2022-12-02   
603-453 2 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-05-28   
603-453 3 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-03-08   
603-453 4 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-10-08   
603-453 6 DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2021-07-07   
603-453 8 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-12-04   
603-453 9 MNCHNHCO37Z  7421 AT&T - LOCAL 122   2021-07-07   
603-489 A MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-489 0 MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122   2002-03-15   
603-489 1 MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-489 2 MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-489 3 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-03-04   
603-489 4 PTMONH07DS1  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-489 5 MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-489 6 MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2007-12-28   
603-489 7 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-01-29   
603-489 8 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-09-02   
603-489 9 MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2003-06-03   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.