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: 553

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-553 A Kirkland WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674      
425-553 0 Kirkland WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-04-04   
425-553 1 Kirkland WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2016-03-25   
425-553 2 Kirkland WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-04-04   
425-553 3 Kirkland WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-04-04   
425-553 4 Kirkland WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-04-04   
425-553 5 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-07-16   
425-553 6 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-07-16   
425-553 7 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-05-18   
425-553 8 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-05-18   
425-553 9 Kirkland WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-03-26   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.