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: WUNNIA021MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-509 A Oelwein IA 6529 T-MOBILE USA, INC. 635      
319-548 A Washington IA 6529 T-MOBILE USA, INC. 635      
563-516 A Elkader IA 6529 T-MOBILE USA, INC. 635      
563-518 A West Union IA 6529 T-MOBILE USA, INC. 635      
563-537 A Monona IA 6529 T-MOBILE USA, INC. 635      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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