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: OKCZOKZC8MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
405-299 7 Calvin OK 073H TELNYX LLC 536   2022-07-28   
405-944 8 Cromwell OK 073H TELNYX LLC 536   2022-07-18   
405-983 A Pauls Valley OK 073H TELNYX LLC 536      
405-983 0 Pauls Valley OK 073H TELNYX LLC 536   2021-06-18   
572-205 4 Edmond OK 073H TELNYX LLC 536   2022-04-03   
572-552 0 Calvin OK 073H TELNYX LLC 536   2023-05-14   
580-219 9 Tishomingo OK 073H TELNYX LLC 536   2022-04-03   
580-257 4 Tishomingo OK 073H TELNYX LLC 536   2022-10-06   
580-446 9 Breckinridge OK 073H TELNYX LLC 536   2022-03-14   
580-847 5 Bennington OK 073H TELNYX LLC 536   2022-07-18   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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