Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Columbia, WA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
509-377 A CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-377 0 CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-377 1 CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-377 2 CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-377 3 CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-377 4 CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-377 6 CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-377 7 YAKMWAWE7MD  508J CENTURYLINK COMMUNICATIONS LLC 676   2015-01-26   
509-377 8 CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-377 9 CLMAWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 676      
509-776 A SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676      
509-776 0 SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676      
509-776 5 SPKNWA01XIY  506J TWILIO INTERNATIONAL INC 676   2021-01-28   
509-776 6 SNSDWAXXHMD  483E ONVOY, LLC - WA 676   2021-06-26   
509-776 7 SNSDWAXXHMD  483E ONVOY, LLC - WA 676   2020-07-20   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

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