Local Calling Guide

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

NXX: 713

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-713 A Nashua NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-713 0 Nashua NH   073H TELNYX LLC 122   2022-11-14   
603-713 1 Nashua NH   073H TELNYX LLC 122   2022-11-14   
603-713 2 Nashua NH   927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2022-11-14   
603-713 3 Nashua NH   637E ONVOY, LLC - NH 122   2022-11-13   
603-713 4 Nashua NH   637E ONVOY, LLC - NH 122   2022-11-13   
603-713 5 Nashua NH   637E ONVOY, LLC - NH 122   2022-11-13   
603-713 6 Nashua NH   637E ONVOY, LLC - NH 122   2022-12-01   
603-713 7 Nashua NH   637E ONVOY, LLC - NH 122   2022-12-01   
603-713 8 Nashua NH   637E ONVOY, LLC - NH 122   2023-07-11   
603-713 9 Nashua NH   637E ONVOY, LLC - NH 122   2022-12-01   

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

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