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: 900

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-900 A Newport NH MNCHNHCO26Z  965H FRACTEL, LLC 122      
603-900 0 Newport NH   965H FRACTEL, LLC 122   2020-08-10   
603-900 1 Newport NH   6386 BELL ATLANTIC MOBILE, INC 122   2024-09-17   
603-900 8 Newport NH   6386 BELL ATLANTIC MOBILE, INC 122   2026-01-15   
603-900 9 Newport NH   965H FRACTEL, LLC 122   2020-08-10   

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

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