Local Calling Guide

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

NXX: 392

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-392 A Winchester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-392 0 Winchester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2007-01-29   
603-392 1 Winchester NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-07-04   
603-392 2 Winchester NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-392 7 Winchester NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122   2016-04-08   

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

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