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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-300 A Chester NH MNCHNHCOCM1  5562 METROPCS, INC. 122      
603-300 0 Chester NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2004-10-18   
603-300 2 Chester NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2005-05-28   
603-300 3 Chester NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2005-10-23   
603-300 6 Chester NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2003-08-15   
603-300 7 Chester NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2003-08-15   
603-300 8 Chester NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2003-08-15   

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

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