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.

NPA: 563 [Rate centres in NPA 563] [Dial plan for NPA 563]

NXX: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
563-256 A De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-256 0 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-256 1 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-256 2 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-256 3 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-256 4 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.