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: 730

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-730 A North Conway NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-730 0 North Conway NH MNCHNHCOX9Y  4286 LIGHTSHIP TELECOM, LLC - NH 122      
603-730 1 North Conway NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-730 2 North Conway NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-730 3 North Conway NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-730 4 North Conway NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-730 5 North Conway NH   793K TWC IP ENABLED SERVICES, LLC 122      
603-730 6 North Conway NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-730 7 North Conway NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-730 8 North Conway NH MNCHNHAC3MD  939H COMMIO, LLC 122      
603-730 9 North Conway NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.