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: DUMSTXXAPS0

Remotes:

Switch Switch name Switch type
ADRNTXXARP0  ADRIAN  RP 
BYRNTXXARP0  BOYS RANCH  RP 
CCTSTXXARP0  CACTUS  RP 
CHNGTXXARP0  CHANNING  RP 
HRTLTXXARP0  HARTLEY  RP 
SNRYTXXARP0  SUNRAY  RP 
SRFRTXXARP0  STRATFORD  RP 
VEGATXXARP0  VEGA  RP 
WLDRTXXARP0  WILDORADO  RP 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
806-399 A Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-399 0 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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