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: CDRRIADTX3X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-220 1 Central City IA 073H TELNYX LLC 635   2020-05-25   
319-224 6 Troy Mills IA 073H TELNYX LLC 635   2020-05-29   
319-408 0 Lisbon IA 073H TELNYX LLC 635   2020-05-28   
319-987 6 Janesville IA 073H TELNYX LLC 635   2020-05-28   
507-502 1 North Chester MN 073H TELNYX LLC 635   2020-07-20   
563-204 A Lansing IA 073H TELNYX LLC 635      
563-204 0 Lansing IA 073H TELNYX LLC 635   2018-06-29   
563-356 0 Chester IA 073H TELNYX LLC 635   2020-05-25   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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