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: DESMIADT1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
515-206 A Fort Dodge IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
515-381 A Des Moines IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
515-398 A Des Moines IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
515-461 A Des Moines IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
515-619 A Des Moines IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
515-705 A Winterset IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
515-805 A Des Moines IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
515-888 A Boone IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
641-243 A Mason City IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
641-250 A Manly IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
641-254 A Nashua IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
641-508 A Osceola IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      
641-924 A Garner IA 9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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