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: STLNNVXF58E

Remotes:

Switch Switch name Switch type
GLBKNVXFRS2  GLENBROOK  RLC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
775-586 A Stateline NV 4421 FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - NV 720      
775-588 A Stateline NV 4421 FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - NV 720      
775-589 A Stateline NV 4421 FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - NV 720      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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