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
447-500 7 Hammond IL 224C ONVOY, LLC 374   2021-04-04   
447-529 2 Decatur IL 224C ONVOY, LLC 374   2021-05-09   
447-529 4 Decatur IL 224C ONVOY, LLC 374   2021-04-04   
447-529 5 Decatur IL 224C ONVOY, LLC 374   2021-04-04   
447-529 6 Decatur IL 224C ONVOY, LLC 374   2021-04-04   
447-529 7 Decatur IL 224C ONVOY, LLC 374   2021-04-04   
447-529 8 Decatur IL 224C ONVOY, LLC 374   2024-02-25   
447-758 7 Illiopolis IL 224C ONVOY, LLC 374   2021-04-18   
447-758 8 Illiopolis IL 224C ONVOY, LLC 374   2021-07-05   
447-842 2 Divernon IL 224C ONVOY, LLC 374   2021-04-19   
447-910 A Springfield IL 224C ONVOY, LLC 374      
447-910 0 Springfield IL 224C ONVOY, LLC 374   2021-05-15   
447-910 1 Springfield IL 224C ONVOY, LLC 374   2024-09-06   
447-910 9 Springfield IL 224C ONVOY, LLC 374   2024-09-06   
447-946 4 Modesto IL 224C ONVOY, LLC 374   2021-10-16   
447-946 6 Modesto IL 224C ONVOY, LLC 374   2021-04-18   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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