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: 803

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-803 A Keene NH MNCHNHCO16Z  508J CENTURYLINK COMMUNICATIONS, LLC 122      
603-803 0 Keene NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-803 1 Keene NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-803 2 Keene NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-803 3 Keene NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-803 4 Keene NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-803 5 Keene NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-803 6 Keene NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-803 7 Keene NH MNCHNHCO16Z  508J CENTURYLINK COMMUNICATIONS, LLC 122      
603-803 8 Keene NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-803 9 Keene NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, 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.