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: 996

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-996 A Plymouth NH MNCHNHCOCM1  5562 METROPCS, INC. 122      
603-996 1 Plymouth NH MNCHNHCOCM1  5562 METROPCS, INC. 122      
603-996 3 Plymouth NH   829J PAETEC ITEL, LLC 122   2006-02-24   
603-996 6 Plymouth NH MNCHNHCOCM1  5562 METROPCS, INC. 122      
603-996 9 Plymouth NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2024-11-11   

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

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