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: 243

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-243 A Woodsville NH MNCHNHCO43Z  792K CHARTER IP ENABLED SERVICES, LLC 122      
603-243 0 Woodsville NH MNCHNHCO43Z  792K CHARTER IP ENABLED SERVICES, LLC 122   2011-09-03   
603-243 1 Woodsville NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-07-22   
603-243 6 Woodsville NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2019-05-17   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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