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: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-454 A Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 4 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 5 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 6 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 7 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 8 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 9 Sunapee NH   145J TERRA NOVA TELECOM INC. 122   2021-05-28   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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