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: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-400 A Ames Lake WA STTLWAWB15Z  965H FRACTEL, LLC 674      
425-400 0 Ames Lake WA   965H FRACTEL, LLC 674   2021-06-21   
425-400 1 Ames Lake WA   483E ONVOY, LLC - WA 674   2021-06-26   
425-400 2 Ames Lake WA   483E ONVOY, LLC - WA 674   2022-08-05   
425-400 3 Ames Lake WA   483E ONVOY, LLC - WA 674   2022-09-17   
425-400 4 Ames Lake WA   965H FRACTEL, LLC 674   2021-06-21   
425-400 5 Ames Lake WA   483E ONVOY, LLC - WA 674   2022-06-10   
425-400 6 Ames Lake WA   483E ONVOY, LLC - WA 674   2022-11-07   
425-400 7 Ames Lake WA   483E ONVOY, LLC - WA 674   2021-12-23   
425-400 8 Ames Lake WA   483E ONVOY, LLC - WA 674   2021-12-23   
425-400 9 Ames Lake WA   483E ONVOY, LLC - WA 674   2023-01-12   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.