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-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
970-907 8 Fort Collins CO 624H ONVOY SPECTRUM, LLC 656   2025-06-12   
970-907 9 Fort Collins CO 624H ONVOY SPECTRUM, LLC 656   2025-06-12   
970-908 1 Loveland CO 624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-910 3 Greeley CO 624H ONVOY SPECTRUM, LLC 656   2025-05-15   
970-910 4 Greeley CO 624H ONVOY SPECTRUM, LLC 656   2025-05-15   
970-914 5 Vail CO 624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-932 6 Estes Park CO 624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-935 1 Breckenridge CO 624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-997 3 Kremmling CO 624H ONVOY SPECTRUM, LLC 656   2025-01-03   
983-212 4 Denver CO 624H ONVOY SPECTRUM, LLC 656   2024-11-19   
983-212 5 Denver CO 624H ONVOY SPECTRUM, LLC 656   2024-11-19   
983-212 6 Denver CO 624H ONVOY SPECTRUM, LLC 656   2024-11-19   
983-212 7 Denver CO 624H ONVOY SPECTRUM, LLC 656   2024-11-19   
983-212 8 Denver CO 624H ONVOY SPECTRUM, LLC 656   2024-11-19   
983-214 A Denver CO 624H ONVOY SPECTRUM, LLC 656   2025-03-20   
983-214 0 Denver CO 624H ONVOY SPECTRUM, LLC 656   2025-03-20   
983-214 1 Denver CO 624H ONVOY SPECTRUM, LLC 656   2025-03-20   
983-214 2 Denver CO 624H ONVOY SPECTRUM, LLC 656   2025-03-20   
983-214 3 Denver CO 624H ONVOY SPECTRUM, LLC 656   2025-03-20   
983-983 A Longmont CO 624H ONVOY SPECTRUM, LLC 656      
983-983 3 Longmont CO 624H ONVOY SPECTRUM, LLC 656   2023-06-02   
983-983 4 Longmont CO 624H ONVOY SPECTRUM, LLC 656   2023-06-02   
983-983 5 Longmont CO 624H ONVOY SPECTRUM, LLC 656   2023-06-02   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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