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: KGWDTXXADS0

Remotes:

Switch Switch name Switch type
PTERTXXARS0  PORTER  RSC 
PTHSTXXARS0  PORTER HEIGHTS  RSS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-312 A Humble TX 2114 BRIGHTSPEED OF TEXAS, INC. 560      
281-348 A Humble TX 2114 BRIGHTSPEED OF TEXAS, INC. 560      
281-358 A Humble TX 2114 BRIGHTSPEED OF TEXAS, INC. 560      
281-359 A Humble TX 2114 BRIGHTSPEED OF TEXAS, INC. 560      

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

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