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: 270

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-270 A Suncook NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-270 0 Suncook NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2019-06-26   
603-270 1 Suncook NH MNCHNHCOX9Y  4286 LIGHTSHIP TELECOM, LLC - NH 122   2001-03-26   
603-270 2 Suncook NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-08-17   
603-270 3 Suncook NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2021-05-26   
603-270 4 Suncook NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2018-01-18   
603-270 5 Suncook NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2018-01-18   
603-270 6 Suncook NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2021-05-26   
603-270 7 Suncook NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2020-08-06   
603-270 8 Suncook NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2019-03-29   
603-270 9 Suncook NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.