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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Switch: RNGLCOACAMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
970-220 A Rangely CO 1772 UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 656      
970-321 A Craig CO 1772 UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 656   2024-01-17   
970-322 A Grand Junction CO 1772 UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS 656   2024-01-17   

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

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