Local Calling Guide

Area code/prefix search

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

NXX: 360

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-360 A Orford NH MNCHNHCOXMZ  573F TOPSHAM COMMUNICATIONS, LLC 122      
603-360 1 Orford NH MNCHNHCOXMZ  573F TOPSHAM COMMUNICATIONS, LLC 122   2010-07-27   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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