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: 905

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-905 A Barrington NH PTMONH07DS1  9827 OTEL TELEKOM, INC. - NH 122      
603-905 0 Barrington NH PTMONH07DS1  9827 OTEL TELEKOM, INC. - NH 122   2006-11-11   
603-905 9 Barrington NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122   2008-04-18   

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

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