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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
636-585 1 High Hill MO 073H TELNYX LLC 520   2020-07-31   
636-589 0 Warrenton MO 073H TELNYX LLC 520   2023-02-18   
636-597 0 Truxton MO 073H TELNYX LLC 520   2020-08-08   
636-662 0 Foley MO 073H TELNYX LLC 520   2020-07-31   
636-665 0 Old Monroe MO 073H TELNYX LLC 520   2020-08-07   
636-668 0 Winfield MO 073H TELNYX LLC 520   2022-09-16   
636-746 8 Maxville MO 073H TELNYX LLC 520   2023-05-26   
636-828 0 New Melle MO 073H TELNYX LLC 520   2020-08-07   
636-849 1 O'Fallon MO 073H TELNYX LLC 520   2020-08-07   
636-932 0 Holstein MO 073H TELNYX LLC 520   2020-07-31   
636-987 0 Defiance MO 073H TELNYX LLC 520   2020-07-31   
730-200 0 Kaskaskia IL 073H TELNYX LLC 520   2023-10-24   
730-207 1 Iuka IL 073H TELNYX LLC 520   2023-10-12   
730-215 0 Mulberry Grove IL 073H TELNYX LLC 520   2023-11-13   
730-216 0 Patoka IL 073H TELNYX LLC 520   2023-11-13   
730-217 0 Shattuc IL 073H TELNYX LLC 520   2023-11-13   
730-218 0 St Peter IL 073H TELNYX LLC 520   2023-11-13   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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