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: 837

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-837 A Whitefield NH WHFDNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-837 0 Whitefield NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122   2002-05-22   
603-837 1 Whitefield NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2023-07-10   
603-837 2 Whitefield NH WHFDNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-837 3 Whitefield NH WHFDNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-837 4 Whitefield NH   145J TERRA NOVA TELECOM INC. 122   2021-05-28   
603-837 6 Whitefield NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-05   
603-837 7 Whitefield NH MNCHNHCOXPZ  853C TIME WARNER CABLE INFORMATION SVCS (NEW HAMPSHIRE) 122   2012-10-02   
603-837 8 Whitefield NH WHFDNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-837 9 Whitefield NH WHFDNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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