Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
360-661 9 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2017-04-09   
360-707 9 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2024-02-18   
360-724 1 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2021-09-26   
360-724 9 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2021-09-26   
360-766 0 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2022-10-16   
360-766 3 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2024-02-18   
360-766 9 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2024-02-18   
360-814 3 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2016-11-04   
360-814 4 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2019-07-20   
360-840 A Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-840 0 Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-840 1 Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-840 2 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2010-05-28   
360-840 3 Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-840 4 Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-840 5 Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-840 6 Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-840 7 Mount Vernon WA 5562 METROPCS, INC. 674      
360-840 8 Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-840 9 Mount Vernon WA 5562 METROPCS, INC. 674      
360-853 0 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2021-11-20   
360-853 1 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2021-11-20   
360-854 1 Mount Vernon WA 5562 METROPCS, INC. 674   2018-04-14   
360-873 7 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2018-04-13   
360-982 A Mount Vernon WA 6529 T-MOBILE USA, INC. 674      
360-982 4 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2024-07-25   
360-982 5 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2013-01-02   
360-982 6 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2012-02-02   
360-982 7 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2011-06-21   
360-982 9 Mount Vernon WA 5562 METROPCS, INC. 674   2012-02-15   
564-260 A Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2024-11-15   
564-260 9 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2024-11-15   
564-900 3 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2022-03-10   
564-900 4 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2022-03-10   
564-900 5 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2022-03-10   
564-900 6 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2022-03-10   
564-900 7 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2022-03-10   
564-900 8 Mount Vernon WA 6529 T-MOBILE USA, INC. 674   2022-03-10   

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Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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