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: WHCYORXXDS0

Remotes:

Switch Switch name Switch type
BTFLORXXRS0  BUTTE FALLS  RLC 
CRLKORXARS0  CRATER LAKE  RSC 
DMLKORXXRS0  DIAMOND LAKE  RSC 
FSLKORXARS0  FISH LAKE  RLC 
PRSPORXXRS0  PROSPECT  RLC 
SHCVORXXRS0  SHADY COVE  RLC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
541-826 A White City OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 670      
541-830 A White City OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 670      
541-831 A White City OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 670      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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