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: 737

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-737 A Laconia NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-737 0 Laconia NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-737 1 Laconia NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-737 2 Laconia NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-737 3 Laconia NH   145J TERRA NOVA TELECOM INC. 122   2025-09-16   
603-737 4 Laconia NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-737 5 Laconia NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-737 6 Laconia NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-737 8 Laconia NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-737 9 Laconia NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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