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: 877

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-877 A New London NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-877 0 New London NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2010-01-25   
603-877 1 New London NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2023-04-17   
603-877 8 New London NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-03-10   
603-877 9 New London NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-03-10   

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

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