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: 252

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-252 A Chesterfield MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
636-252 0 Chesterfield MO STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520      
636-252 1 Chesterfield MO STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520      
636-252 2 Chesterfield MO STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520      
636-252 3 Chesterfield MO STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520      
636-252 4 Chesterfield MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
636-252 5 Chesterfield MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
636-252 6 Chesterfield MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
636-252 7 Chesterfield MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
636-252 8 Chesterfield MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
636-252 9 Chesterfield MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.