Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 305

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-305 A Frederick MD FRDRMDFRKMD  5562 METROPCS, INC. 240   2024-02-09   
301-305 0 Frederick MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
301-305 1 Frederick MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
301-305 2 Frederick MD   5562 METROPCS, INC. 240      
301-305 3 Frederick MD   5562 METROPCS, INC. 240      
301-305 4 Frederick MD   5562 METROPCS, INC. 240      
301-305 5 Frederick MD   5562 METROPCS, INC. 240      
301-305 6 Frederick MD   5562 METROPCS, INC. 240      
301-305 7 Frederick MD   5562 METROPCS, INC. 240      
301-305 8 Frederick MD   5562 METROPCS, INC. 240      
301-305 9 Frederick MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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