Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 425 [Rate centres in NPA 425] [Dial plan for NPA 425]

NXX: 490

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-490 A Fall City WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674      
425-490 0 Fall City WA   508J CENTURYLINK COMMUNICATIONS, LLC 674   2021-08-30   
425-490 1 Fall City WA   318J COMCAST IP PHONE, LLC 674   2018-01-28   
425-490 2 Fall City WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2019-11-28   
425-490 4 Fall City WA   483E ONVOY, LLC - WA 674   2019-01-18   
425-490 5 Fall City WA   483E ONVOY, LLC - WA 674   2020-10-11   
425-490 6 Fall City WA   483E ONVOY, LLC - WA 674   2020-10-11   
425-490 7 Fall City WA   483E ONVOY, LLC - WA 674   2021-06-26   
425-490 8 Fall City WA   483E ONVOY, LLC - WA 674   2021-06-26   
425-490 9 Fall City WA   483E ONVOY, LLC - WA 674   2022-08-28   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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