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: 314 [Rate centres in NPA 314] [Dial plan for NPA 314]

NXX: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
314-221 A Kirkwood MO   6529 T-MOBILE USA, INC. 520      
314-221 0 Kirkwood MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
314-221 1 Kirkwood MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
314-221 2 Kirkwood MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
314-221 3 Kirkwood MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
314-221 4 Kirkwood MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
314-221 5 Kirkwood MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
314-221 6 Kirkwood MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
314-221 7 Kirkwood MO   5562 METROPCS, INC. 520      
314-221 8 Kirkwood MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
314-221 9 Kirkwood MO   5562 METROPCS, INC. 520      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.