Local Calling Guide

Area code/prefix search

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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-274 A South Hampton NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-274 4 South Hampton NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-274 9 South Hampton NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

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

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