Local Calling Guide

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

NXX: 945

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-945 A Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-945 0 Manchester NH   637E ONVOY, LLC - NH 122   2007-10-07   
603-945 1 Manchester NH   637E ONVOY, LLC - NH 122   2018-09-11   
603-945 2 Manchester NH   637E ONVOY, LLC - NH 122   2018-05-13   
603-945 3 Manchester NH   318J COMCAST IP PHONE, LLC 122   2016-06-07   
603-945 4 Manchester NH   637E ONVOY, LLC - NH 122   2018-05-13   
603-945 5 Manchester NH   637E ONVOY, LLC - NH 122   2018-05-13   
603-945 6 Manchester NH   637E ONVOY, LLC - NH 122   2019-06-06   
603-945 7 Manchester NH   637E ONVOY, LLC - NH 122   2018-09-11   
603-945 8 Manchester NH   637E ONVOY, LLC - NH 122   2018-09-11   
603-945 9 Manchester NH   637E ONVOY, LLC - NH 122   2018-12-07   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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