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: GNBONCEUY1X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-938 0 Greensboro NC 793K TWC IP ENABLED SERVICES, LLC 424   2013-03-13   
336-946 1 Lewisville NC 793K TWC IP ENABLED SERVICES, LLC 424   2007-01-10   
336-946 6 Lewisville NC 793K TWC IP ENABLED SERVICES, LLC 424   2013-05-21   
336-946 9 Lewisville NC 793K TWC IP ENABLED SERVICES, LLC 424   2012-08-16   
336-949 4 Madison NC 793K TWC IP ENABLED SERVICES, LLC 424   2007-01-03   
336-949 9 Madison NC 793K TWC IP ENABLED SERVICES, LLC 424   2013-05-21   
336-955 1 Winston-Salem NC 793K TWC IP ENABLED SERVICES, LLC 424   2015-12-31   
336-955 2 Winston-Salem NC 793K TWC IP ENABLED SERVICES, LLC 424   2015-12-31   
336-955 3 Winston-Salem NC 793K TWC IP ENABLED SERVICES, LLC 424   2015-12-31   
336-985 6 King NC 793K TWC IP ENABLED SERVICES, LLC 424   2007-03-13   
336-985 8 King NC 793K TWC IP ENABLED SERVICES, LLC 424   2013-05-21   
336-986 9 Winston-Salem NC 793K TWC IP ENABLED SERVICES, LLC 424   2015-02-12   
336-997 9 Winston-Salem NC 793K TWC IP ENABLED SERVICES, LLC 424   2014-11-24   
336-999 7 Winston-Salem NC 793K TWC IP ENABLED SERVICES, LLC 424   2015-03-31   
336-999 8 Winston-Salem NC 793K TWC IP ENABLED SERVICES, LLC 424   2015-03-31   
743-244 1 Yanceyville NC 793K TWC IP ENABLED SERVICES, LLC 424   2022-01-24   
743-246 A Prospect Hill NC 793K TWC IP ENABLED SERVICES, LLC 424   2025-02-05   
743-246 1 Prospect Hill NC 793K TWC IP ENABLED SERVICES, LLC 424   2022-08-14   
743-283 A Roxboro NC 793K TWC IP ENABLED SERVICES, LLC 424   2025-02-05   
743-283 1 Roxboro NC 793K TWC IP ENABLED SERVICES, LLC 424   2024-12-28   
919-568 0 Mebane NC 793K TWC IP ENABLED SERVICES, LLC 424   2013-05-21   
919-568 8 Mebane NC 793K TWC IP ENABLED SERVICES, LLC 424   2007-10-16   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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