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: SNSDWAXXDS0

Remotes:

Switch Switch name Switch type
BCTNWAXXRS0  BICKLETON  RLC 
CLMAWAXARS0  COLUMBIA  RSC 
GDVWWAXARS0  GRANDVIEW  RSC 
GRNGWAXARS0  GRANGER  RSC 
HRRHWAXARS0  HARRAH  RSC 
MBTNWAXXRS0  MABTON  RSC 
MTWAWAXARS0  MATTAWA  RSC 
PASNWAXARS0  PATERSON  RLC 
PRSRWAXARS0  PROSSER  RSC 
TPNSWAXXRS0  TOPPENISH  RSC 
WHSWWAXXRS0  WHITE SWAN  RLC 
WHTSWAXARS0  WHITSTRAN  RLC 
WPATWAXXRS0  WAPATO  RSC 
ZLLHWAXARS0  ZILLAH  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
509-836 A Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-836 0 Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-836 2 Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-836 3 Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-836 4 Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-836 5 Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-836 6 Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-836 8 Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-837 A Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-839 A Sunnyside WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      

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

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