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: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-403 A Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
425-403 0 Kirkland WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2021-06-26   
425-403 1 Kirkland WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2021-06-26   
425-403 2 Kirkland WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2021-06-26   
425-403 3 Kirkland WA KRLDWADWDS1  7274 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 674   2019-11-20   
425-403 4 Kirkland WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2019-12-30   
425-403 5 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2021-04-13   
425-403 6 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2020-04-04   
425-403 7 Kirkland WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2020-03-04   
425-403 8 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2020-01-18   
425-403 9 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2019-08-03   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.