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
479-901 7 Fort Smith AR 624H ONVOY SPECTRUM, LLC 526   2022-06-11   
479-901 8 Fort Smith AR 624H ONVOY SPECTRUM, LLC 526   2022-04-29   
479-901 9 Fort Smith AR 624H ONVOY SPECTRUM, LLC 526   2021-06-14   
479-995 1 Centerton AR 624H ONVOY SPECTRUM, LLC 526   2024-12-15   
539-224 1 West Maysville OK 624H ONVOY SPECTRUM, LLC 526   2024-12-12   
539-243 0 Watts OK 624H ONVOY SPECTRUM, LLC 526   2024-12-12   
539-245 3 Pocola OK 624H ONVOY SPECTRUM, LLC 526   2024-03-11   
539-276 0 Cedars OK 624H ONVOY SPECTRUM, LLC 526   2024-03-11   
539-290 8 West Uniontown OK 624H ONVOY SPECTRUM, LLC 526   2024-03-11   
539-312 A Colcord OK 624H ONVOY SPECTRUM, LLC 526   2025-01-10   
539-312 0 Colcord OK 624H ONVOY SPECTRUM, LLC 526   2025-01-10   
539-312 1 Colcord OK 624H ONVOY SPECTRUM, LLC 526   2025-01-10   
539-352 6 Moffett OK 624H ONVOY SPECTRUM, LLC 526   2024-03-11   

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

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