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.
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NPA: 425 [Rate centres in NPA 425] [Dial plan for NPA 425]

NXX: 620

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-620 A Bellevue WA STTLWAWBXQZ  197D VONAGE AMERICA LLC 674      
425-620 0 Bellevue WA STTLWAWBXQZ  197D VONAGE AMERICA LLC 674   2019-01-27   
425-620 1 Bellevue WA STTLWAWBXQZ  197D VONAGE AMERICA LLC 674   2019-01-27   
425-620 2 Bellevue WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-01-28   
425-620 3 Bellevue WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-01-28   
425-620 4 Bellevue WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-01-28   
425-620 5 Bellevue WA STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-02-07   
425-620 6 Bellevue WA STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-02-18   
425-620 7 Bellevue WA STTLWAWBXQZ  197D VONAGE AMERICA LLC 674   2019-01-28   
425-620 8 Bellevue WA STTLWAWBXQZ  197D VONAGE AMERICA LLC 674   2019-01-28   
425-620 9 Bellevue WA STTLWAWBXQZ  197D VONAGE AMERICA LLC 674   2019-01-28   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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