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: 229 [Rate centres in NPA 229] [Dial plan for NPA 229]

NXX: 637

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
229-637 A Rhine GA FTZGGAXALMD  067D ONVOY, LLC - GA 444      
229-637 2 Rhine GA FTZGGAXALMD  067D ONVOY, LLC - GA 444   2023-10-23   
229-637 3 Rhine GA FTZGGAXARMD  624H ONVOY SPECTRUM, LLC 444   2024-03-07   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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