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: 500

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-500 A Tilton NH MNCHNHCO26Z  965H FRACTEL, LLC 122      
603-500 0 Tilton NH MNCHNHCO26Z  965H FRACTEL, LLC 122   2020-08-10   
603-500 1 Tilton NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-07-04   
603-500 5 Tilton NH MNCHNHCO26Z  965H FRACTEL, LLC 122   2020-08-10   
603-500 7 Tilton NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2022-11-05   

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

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