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: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-357 A Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-357 0 Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-357 1 Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-357 2 Silver Lake WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2021-06-26   
425-357 3 Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-357 4 Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-357 5 Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-357 6 Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-357 7 Silver Lake WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2016-03-03   
425-357 8 Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-357 9 Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.