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.

Hat Island, WA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
360-444 A SWHDWAXXDS1  2417 HAT ISLAND TEL. CO. 674      
564-223 A STTLWA03X1X  318J COMCAST IP PHONE, LLC 674      
564-223 1 STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2022-10-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.