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: 808

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-808 A Antrim NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-808 0 Antrim NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2010-02-10   
603-808 1 Antrim NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2020-04-13   
603-808 2 Antrim NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2020-04-13   

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

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