Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: DMLKORXXRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
541-793 A Diamond Lake OR 4520 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 670      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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