Local Calling Guide

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

NXX: 419

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-419 A Suncook NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-419 0 Suncook NH   6290 UNITED STATES CELLULAR - NH 122      
603-419 1 Suncook NH   6386 BELL ATLANTIC MOBILE, INC 122   2018-06-04   
603-419 2 Suncook NH   6386 BELL ATLANTIC MOBILE, INC 122   2019-04-25   
603-419 3 Suncook NH   6386 BELL ATLANTIC MOBILE, INC 122   2019-04-25   
603-419 5 Suncook NH   6386 BELL ATLANTIC MOBILE, INC 122   2019-06-11   
603-419 6 Suncook NH   6290 UNITED STATES CELLULAR - NH 122      
603-419 7 Suncook NH   6290 UNITED STATES CELLULAR - NH 122      
603-419 8 Suncook NH   6290 UNITED STATES CELLULAR - NH 122      
603-419 9 Suncook NH   6290 UNITED STATES CELLULAR - NH 122      

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

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