Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 606 [Rate centres in NPA 606] [Dial plan for NPA 606]

NXX: 721

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
606-721 A Washington KY WASHKYXAPS0  9691 WINDSTREAM KENTUCKY EAST, INC. - LONDON 466      
606-721 0 Washington KY   896E ONVOY, LLC - KY 466   2016-06-21   
606-721 1 Washington KY   896E ONVOY, LLC - KY 466   2016-06-21   
606-721 2 Washington KY   793K TWC IP ENABLED SERVICES, LLC 466   2020-09-05   
606-721 4 Washington KY   9691 WINDSTREAM KENTUCKY EAST, INC. - LONDON 466   2012-03-30   
606-721 6 Washington KY   8406 TELEPORT COMMUNICATIONS AMERICA, LLC - KY 466   2013-05-15   
606-721 7 Washington KY   896E ONVOY, LLC - KY 466   2020-11-15   
606-721 8 Washington KY   896E ONVOY, LLC - KY 466   2020-11-15   
606-721 9 Washington KY   624H ONVOY SPECTRUM, LLC 466   2024-12-15   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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