Local Calling Guide

Area code/prefix search

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

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-477 A Claremont NH MRMCNHGICM0  6290 UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE 122      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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