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: 218

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-218 A Maxville MO MNCHMOAQGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520      
636-218 0 Maxville MO   093F ONVOY, LLC - MO 520   2022-12-29   
636-218 1 Maxville MO   093F ONVOY, LLC - MO 520   2022-09-25   
636-218 2 Maxville MO   093F ONVOY, LLC - MO 520   2021-12-24   
636-218 3 Maxville MO   093F ONVOY, LLC - MO 520   2021-12-24   
636-218 4 Maxville MO   093F ONVOY, LLC - MO 520   2021-08-19   
636-218 5 Maxville MO   093F ONVOY, LLC - MO 520   2021-08-19   
636-218 6 Maxville MO   093F ONVOY, LLC - MO 520   2021-08-19   
636-218 7 Maxville MO   093F ONVOY, LLC - MO 520   2021-08-19   
636-218 8 Maxville MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2021-07-10   
636-218 9 Maxville MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2021-07-10   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.