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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 425 [Rate centres in NPA 425] [Dial plan for NPA 425]

NXX: 364

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-364 A Bothell WA BOTHWAAK3MD  6529 T-MOBILE USA, INC. 674      
425-364 0 Bothell WA   6529 T-MOBILE USA, INC. 674   2021-05-22   
425-364 1 Bothell WA   6529 T-MOBILE USA, INC. 674   2021-05-22   
425-364 2 Bothell WA   6529 T-MOBILE USA, INC. 674   2021-05-22   
425-364 4 Bothell WA   483E ONVOY, LLC - WA 674   2021-03-16   
425-364 5 Bothell WA   483E ONVOY, LLC - WA 674   2021-03-16   
425-364 6 Bothell WA   483E ONVOY, LLC - WA 674   2021-03-16   
425-364 7 Bothell WA   939H COMMIO, LLC 674   2021-10-09   
425-364 8 Bothell WA   6529 T-MOBILE USA, INC. 674   2021-03-15   
425-364 9 Bothell WA   6529 T-MOBILE USA, INC. 674   2021-03-15   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.