Local Calling Guide

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

NXX: 590

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-590 A Durham NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 0 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 1 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 2 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 4 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 5 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 6 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 7 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 8 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-590 9 Durham NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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