Local Calling Guide

Area code/prefix search

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

NXX: 697

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-697 A Dover NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-697 0 Dover NH   637E ONVOY, LLC - NH 122   2023-08-20   
603-697 1 Dover NH   318J COMCAST IP PHONE, LLC 122   2022-11-20   
603-697 2 Dover NH   318J COMCAST IP PHONE, LLC 122   2022-11-20   
603-697 3 Dover NH   318J COMCAST IP PHONE, LLC 122   2022-11-20   
603-697 4 Dover NH   637E ONVOY, LLC - NH 122   2023-04-07   
603-697 5 Dover NH   637E ONVOY, LLC - NH 122   2023-09-09   
603-697 6 Dover NH   927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2023-06-22   
603-697 7 Dover NH   637E ONVOY, LLC - NH 122   2022-12-01   
603-697 8 Dover NH   637E ONVOY, LLC - NH 122   2023-02-19   
603-697 9 Dover NH   927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2022-11-24   

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

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