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: 606

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-606 A Issaquah WA STTLWAZUCM3  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674      
425-606 0 Issaquah WA STTLWAZUCM3  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2014-07-06   
425-606 1 Issaquah WA STTLWAZUCM3  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2014-08-18   
425-606 2 Issaquah WA STTLWAWBDS1  483E ONVOY, LLC - WA 674      
425-606 3 Issaquah WA STTLWAWBDS1  483E ONVOY, LLC - WA 674      
425-606 4 Issaquah WA STTLWAWBDS1  483E ONVOY, LLC - WA 674      
425-606 5 Issaquah WA STTLWAWBDS1  483E ONVOY, LLC - WA 674      
425-606 6 Issaquah WA PTORWACYDS0  937F ASTOUND BROADBAND, LLC - WA 674   2012-02-12   
425-606 7 Issaquah WA STTLWAZUCM3  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2014-09-15   
425-606 8 Issaquah WA STTLWAZUCM3  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2018-10-16   
425-606 9 Issaquah WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-05-18   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.