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: 443

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-443 A St Charles MCA3 MO STCHMO63DSA  9533 SOUTHWESTERN BELL 520      
636-443 0 St Charles MCA3 MO STCHMO63DSA  9533 SOUTHWESTERN BELL 520      
636-443 1 St Charles MCA3 MO STLTMOBOAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520      
636-443 2 St Charles MCA3 MO STCHMO63DSA  9533 SOUTHWESTERN BELL 520      
636-443 3 St Charles MCA3 MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
636-443 4 St Charles MCA3 MO STCHMO63DSA  9533 SOUTHWESTERN BELL 520      
636-443 5 St Charles MCA3 MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520      
636-443 6 St Charles MCA3 MO STCHMO63DSA  9533 SOUTHWESTERN BELL 520      
636-443 7 St Charles MCA3 MO STCHMO63DSA  9533 SOUTHWESTERN BELL 520      
636-443 8 St Charles MCA3 MO STCHMO63DSA  9533 SOUTHWESTERN BELL 520      
636-443 9 St Charles MCA3 MO   5562 METROPCS, INC. 520      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.