Other ways to say the browser could not find the host server for the provided address.did you make a mistake when typing the domain? (e.g. ww.mozilla.org instead of www.mozilla.org)are you certain this domain address exists? its registration may have expired.are you unable to browse other sites? check your network connection and dns server settings.is your computer or network protected by a firewall or proxy? incorrect settings can interfere with web browsing
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