Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 602

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-602 A Rochester NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122      
603-602 0 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-08-19   
603-602 1 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-08-19   
603-602 2 Rochester NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2021-02-08   
603-602 3 Rochester NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2021-02-08   
603-602 4 Rochester NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2021-02-08   
603-602 5 Rochester NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2021-02-05   
603-602 6 Rochester NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2021-02-05   
603-602 7 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-05-07   
603-602 8 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-08-19   
603-602 9 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-08-19   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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