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: 931

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-931 A Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 0 Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 1 Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 2 Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 3 Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 4 Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 5 Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 6 Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 7 Festus-Crystal City MCA5 MO FSTSMOYEDS0  9533 SOUTHWESTERN BELL 520      
636-931 8 Festus-Crystal City MCA5 MO STLTMOBOAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2019-01-21   
636-931 9 Festus-Crystal City MCA5 MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2019-02-02   

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.