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: 800

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-800 A Bellevue WA STTLWAWBXPZ  073H TELNYX LLC 674      
425-800 0 Bellevue WA   073H TELNYX LLC 674   2017-04-15   
425-800 1 Bellevue WA   707G WIDE VOICE, LLC - WA 674   2017-11-05   
425-800 2 Bellevue WA   321J HD CARRIER LLC 674   2017-11-05   
425-800 3 Bellevue WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2017-09-07   
425-800 4 Bellevue WA   483E ONVOY, LLC - WA 674   2017-12-15   
425-800 5 Bellevue WA   483E ONVOY, LLC - WA 674   2017-12-15   
425-800 6 Bellevue WA   483E ONVOY, LLC - WA 674   2017-12-15   
425-800 7 Bellevue WA   6529 T-MOBILE USA, INC. 674   2017-12-17   
425-800 8 Bellevue WA   073H TELNYX LLC 674   2017-04-15   
425-800 9 Bellevue WA   6529 T-MOBILE USA, INC. 674   2017-12-17   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.