Local Calling Guide

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

NXX: 468

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-468 A Seabrook NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-468 0 Seabrook NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-07-04   
603-468 1 Seabrook NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-468 2 Seabrook NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2024-08-29   
603-468 3 Seabrook NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-468 4 Seabrook NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-468 9 Seabrook NH   145J TERRA NOVA TELECOM INC. 122   2025-10-21   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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