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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Switch: STTLWA03X5X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
253-233 A Tacoma WA 6630 USA MOBILITY WIRELESS, INC. 674      
253-291 A Tacoma WA 6630 USA MOBILITY WIRELESS, INC. 674      
253-309 A Tacoma WA 6630 USA MOBILITY WIRELESS, INC. 674      
253-415 A Tacoma WA 6630 USA MOBILITY WIRELESS, INC. 674      
253-416 A Tacoma WA 6630 USA MOBILITY WIRELESS, INC. 674      
253-687 A Tacoma WA 6630 USA MOBILITY WIRELESS, INC. 674      
253-903 A Tacoma WA 6630 USA MOBILITY WIRELESS, INC. 674      
360-290 A Olympia WA 6630 USA MOBILITY WIRELESS, INC. 674   2024-02-28   
360-971 A Olympia WA 6630 USA MOBILITY WIRELESS, INC. 674   2024-02-28   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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