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: 636 [Rate centres in NPA 636] [Dial plan for NPA 636]

NXX: 633

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-633 A Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-633 0 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-633 1 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-633 2 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2009-01-20   
636-633 3 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2013-10-28   
636-633 4 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2016-02-05   
636-633 5 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2022-01-09   
636-633 6 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      
636-633 7 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2020-12-20   
636-633 8 Imperial MO   5562 METROPCS, INC. 520   2020-12-20   
636-633 9 Imperial MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.