Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 486

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-486 A Manchester NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-486 0 Manchester NH   637E ONVOY, LLC - NH 122   2015-05-11   
603-486 1 Manchester NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2008-07-17   
603-486 2 Manchester NH   6290 UNITED STATES CELLULAR - NH 122      
603-486 3 Manchester NH   6290 UNITED STATES CELLULAR - NH 122      
603-486 4 Manchester NH   6290 UNITED STATES CELLULAR - NH 122      
603-486 5 Manchester NH   6290 UNITED STATES CELLULAR - NH 122      
603-486 6 Manchester NH   6290 UNITED STATES CELLULAR - NH 122      
603-486 7 Manchester NH   6290 UNITED STATES CELLULAR - NH 122      
603-486 8 Manchester NH   6290 UNITED STATES CELLULAR - NH 122      
603-486 9 Manchester NH   6290 UNITED STATES CELLULAR - NH 122      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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