Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 748

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-748 A Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240   2024-02-09   
301-748 0 Frederick MD FRDRMDFRKMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240      
301-748 1 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-748 2 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-748 3 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-748 4 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-748 5 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-748 6 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-748 7 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-748 8 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      
301-748 9 Frederick MD FRDRMDFR9MD  5562 METROPCS, INC. 240      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.