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
319-222 5 Cedar Falls IA 939H COMMIO, LLC 635   2022-08-07   
319-264 5 Oelwein IA 939H COMMIO, LLC 635   2022-11-19   
319-265 9 Cedar Rapids IA 939H COMMIO, LLC 635   2022-07-29   
319-315 8 Anamosa IA 939H COMMIO, LLC 635   2022-11-13   
319-340 7 Waterloo IA 939H COMMIO, LLC 635   2022-09-27   
319-381 6 Iowa City IA 939H COMMIO, LLC 635   2024-04-07   
319-381 9 Iowa City IA 939H COMMIO, LLC 635   2024-04-07   
319-407 1 Waverly IA 939H COMMIO, LLC 635   2022-08-07   
319-458 1 Washington IA 939H COMMIO, LLC 635   2022-08-07   
319-471 9 Iowa City IA 939H COMMIO, LLC 635   2024-03-01   
319-500 1 Vinton IA 939H COMMIO, LLC 635   2022-11-19   
319-600 9 Iowa City IA 939H COMMIO, LLC 635   2024-03-01   
319-867 A Iowa City IA 939H COMMIO, LLC 635      
319-867 5 Iowa City IA 939H COMMIO, LLC 635   2019-08-15   
563-276 8 Waukon IA 939H COMMIO, LLC 635   2022-11-13   
563-363 5 Manchester IA 939H COMMIO, LLC 635   2022-09-29   
563-550 0 Calmar IA 939H COMMIO, LLC 635   2022-11-06   
563-644 9 Decorah IA 939H COMMIO, LLC 635   2022-09-05   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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