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: GNBONCEU33Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-450 A Greensboro NC 4792 XO NORTH CAROLINA, INC. 424      
336-450 0 Greensboro NC 4792 XO NORTH CAROLINA, INC. 424   2009-10-01   
336-450 1 Greensboro NC 4792 XO NORTH CAROLINA, INC. 424   2009-10-01   
336-450 2 Greensboro NC 4792 XO NORTH CAROLINA, INC. 424   2009-10-01   
336-450 3 Greensboro NC 4792 XO NORTH CAROLINA, INC. 424   2009-10-01   
336-450 4 Greensboro NC 4792 XO NORTH CAROLINA, INC. 424   2009-10-01   
336-450 5 Greensboro NC 4792 XO NORTH CAROLINA, INC. 424   2009-10-01   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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