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: DLLSTXSQDS2

Remotes:

Switch Switch name Switch type
PLANTXMZRS1  PLANO  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
214-614 A Irving TX 8958 XO TEXAS, INC. 552      
214-615 A Dallas TX 8958 XO TEXAS, INC. 552      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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