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: 560

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-560 A Kirkland WA STTLWAWB40Z  598J FIVE9, INC. 674   2024-02-23   
425-560 0 Kirkland WA   598J FIVE9, INC. 674   2024-02-23   
425-560 1 Kirkland WA   159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2024-11-21   
425-560 5 Kirkland WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-07-20   
425-560 6 Kirkland WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-07-20   
425-560 7 Kirkland WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-06-09   
425-560 8 Kirkland WA   939H COMMIO, LLC 674   2024-04-18   
425-560 9 Kirkland WA   939H COMMIO, LLC 674   2024-04-18   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.