Local Calling Guide

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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 918

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-918 A Hampton NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-918 0 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-918 1 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122   2008-11-03   
603-918 2 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122   2014-09-01   
603-918 3 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122   2011-02-11   
603-918 4 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122   2012-11-11   
603-918 5 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-09-18   
603-918 6 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-918 7 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-918 8 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-918 9 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122      

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

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