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.
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Switch: STSNWAXARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
509-427 A Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-427 0 Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-427 2 Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-427 3 Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-427 4 Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-427 5 Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-427 7 Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-427 8 Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-427 9 Stevenson WA 4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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