Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 944

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-944 A South Hampton NH MNCHNHCOCM1  5562 METROPCS, INC. 122      
603-944 0 South Hampton NH   5562 METROPCS, INC. 122      
603-944 1 South Hampton NH   5562 METROPCS, INC. 122      
603-944 2 South Hampton NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2003-08-03   
603-944 3 South Hampton NH   5562 METROPCS, INC. 122   2003-10-11   
603-944 4 South Hampton NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2003-03-23   
603-944 5 South Hampton NH   5562 METROPCS, INC. 122   2003-12-29   
603-944 6 South Hampton NH   5562 METROPCS, INC. 122      
603-944 7 South Hampton NH   5562 METROPCS, INC. 122      
603-944 8 South Hampton NH   5562 METROPCS, INC. 122   2004-11-26   
603-944 9 South Hampton NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-04-29   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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