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.

Switch: STLSMOPL6MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
314-636 3 Oakville MO 073H TELNYX LLC 520   2023-09-04   
314-936 1 Creve Coeur MO 073H TELNYX LLC 520   2022-04-22   
314-948 1 Sappington MO 073H TELNYX LLC 520   2022-07-16   
314-970 1 St Louis MO 073H TELNYX LLC 520   2022-04-18   
314-988 0 Oakville MO 073H TELNYX LLC 520   2022-05-07   
557-777 5 Creve Coeur MO 073H TELNYX LLC 520   2023-09-29   
573-206 2 Beaufort MO 073H TELNYX LLC 520   2022-07-22   
573-224 8 Greenville MO 073H TELNYX LLC 520   2022-04-18   
573-804 A Senath MO 073H TELNYX LLC 520      
573-804 0 Senath MO 073H TELNYX LLC 520   2021-07-01   
618-217 4 Wood River IL 073H TELNYX LLC 520   2022-10-01   
618-721 A Brownstown IL 073H TELNYX LLC 520      
618-721 0 Brownstown IL 073H TELNYX LLC 520   2021-07-23   
618-989 0 Wood River IL 073H TELNYX LLC 520   2022-05-10   
636-213 0 Warrenton MO 073H TELNYX LLC 520   2022-03-15   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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