Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 253 [Rate centres in NPA 253] [Dial plan for NPA 253]

NXX: 478

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
253-478 A Kent WA STTLWA06DSE  7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
253-478 0 Kent WA   5562 METROPCS, INC. 674   2015-06-21   
253-478 1 Kent WA   7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
253-478 2 Kent WA   073H TELNYX LLC 674   2020-12-10   
253-478 3 Kent WA   318J COMCAST IP PHONE, LLC 674   2015-11-25   
253-478 4 Kent WA   7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
253-478 5 Kent WA   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2004-02-08   
253-478 6 Kent WA   5562 METROPCS, INC. 674   2016-07-09   
253-478 7 Kent WA   508J CENTURYLINK COMMUNICATIONS, LLC 674   2015-06-26   
253-478 8 Kent WA   483E ONVOY, LLC - WA 674   2020-11-16   
253-478 9 Kent WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-11-11   

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

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