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: 688

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
314-688 A St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520      
314-688 0 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 1 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 2 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 3 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 4 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 5 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 6 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 7 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 8 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   
314-688 9 St Louis MO STLVMOOH6MD  5562 METROPCS, INC. 520   2014-11-14   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.