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: DUMSTXXADS2

Remotes:

Switch Switch name Switch type
ADRNTXXARS0  ADRIAN  RSC 
BYRNTXXARS1  BOYS RANCH  RSC 
CCTSTXXARS1  CACTUS  RSC 
CHNGTXXARS1  CHANNING  RLC 
HRTLTXXARS1  HARTLEY  RSC 
SNRYTXXARS0  SUNRAY  RSC 
SRFRTXXARS0  STRATFORD  RSC 
VEGATXXARS0  VEGA  RSC 
WLDRTXXARS0  WILDORADO  RLC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
806-399 1 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-399 2 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-399 4 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-399 5 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-399 6 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-399 7 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-399 8 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-399 9 Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-934 A Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      
806-935 A Dumas TX 1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 546      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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