Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
206-460 6 Des Moines WA 321J HD CARRIER LLC 674   2016-05-21   
206-460 7 Des Moines WA 321J HD CARRIER LLC 674   2016-05-21   
206-606 0 Seattle WA 321J HD CARRIER LLC 674   2016-05-21   
206-606 9 Seattle WA 321J HD CARRIER LLC 674   2016-05-21   
206-806 A Seattle WA 321J HD CARRIER LLC 674      
206-806 9 Seattle WA 321J HD CARRIER LLC 674   2019-06-07   
253-257 3 Tacoma-Waverly WA 321J HD CARRIER LLC 674   2016-09-11   
253-257 4 Tacoma-Waverly WA 321J HD CARRIER LLC 674   2016-09-11   
253-331 4 Tacoma-Waverly WA 321J HD CARRIER LLC 674   2017-11-05   
253-392 3 Tacoma-Waverly WA 321J HD CARRIER LLC 674   2016-04-28   
253-458 8 Kent WA 321J HD CARRIER LLC 674   2016-05-21   
253-480 8 Kent WA 321J HD CARRIER LLC 674   2016-05-21   
253-993 3 Tacoma-Waverly WA 321J HD CARRIER LLC 674   2019-09-15   
360-222 5 South Whidbey WA 321J HD CARRIER LLC 674   2018-04-30   
360-222 7 South Whidbey WA 321J HD CARRIER LLC 674   2016-05-02   
425-225 0 Silver Lake WA 321J HD CARRIER LLC 674   2016-09-11   
425-225 9 Silver Lake WA 321J HD CARRIER LLC 674   2016-09-11   
425-230 8 Bellevue WA 321J HD CARRIER LLC 674   2016-05-21   
425-230 9 Bellevue WA 321J HD CARRIER LLC 674   2016-05-21   
425-399 9 Silver Lake WA 321J HD CARRIER LLC 674   2016-05-21   
425-436 6 Bellevue WA 321J HD CARRIER LLC 674   2019-09-06   
425-535 A Everett WA 321J HD CARRIER LLC 674      
425-535 9 Everett WA 321J HD CARRIER LLC 674   2018-12-27   
425-585 5 Silver Lake WA 321J HD CARRIER LLC 674   2016-05-21   
425-585 6 Silver Lake WA 321J HD CARRIER LLC 674   2019-05-05   
425-585 7 Silver Lake WA 321J HD CARRIER LLC 674   2019-08-22   
425-666 4 Everett WA 321J HD CARRIER LLC 674   2020-10-08   
425-666 5 Everett WA 321J HD CARRIER LLC 674   2020-10-08   
425-800 1 Bellevue WA 321J HD CARRIER LLC 674   2017-11-05   
425-800 2 Bellevue WA 321J HD CARRIER LLC 674   2017-11-05   

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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