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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: GNVLSCMCXWX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
821-221 A Greenville SC 616J LEAP TELECOM, LLC 430   2025-02-09   
821-221 0 Greenville SC 616J LEAP TELECOM, LLC 430   2025-02-09   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: Execulink Telecom

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