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.
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NPA: 316 [Rate centres in NPA 316] [Dial plan for NPA 316]

NXX: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
316-388 A Cheney KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2024-08-06   
316-388 0 Cheney KS WCHVKSCK9MD  6529 T-MOBILE USA, INC. 532   2024-08-09   
316-388 3 Cheney KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2024-08-06   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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