Local Calling Guide

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

NXX: 207

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-207 A Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-207 0 Derry NH MNCHNHCO23Z  073H TELNYX LLC 122   2022-11-19   
603-207 1 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-01-14   
603-207 2 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-12-01   
603-207 3 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-12-01   
603-207 4 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-12-01   
603-207 5 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-01-14   
603-207 6 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-01-14   
603-207 7 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-11-13   
603-207 8 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-11-13   
603-207 9 Derry NH MNCHNHCO23Z  073H TELNYX LLC 122   2023-02-10   

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

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