How to Block Websites Using Your Computer's Hosts File

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You can block unwanted websites on your computer by editing the hosts file, a built-in system file available on Windows, macOS, and Linux, without installing any additional software. The method works by redirecting a domain to a dead address such as 0.0.0.0, preventing the site from ever loading. After adding the relevant lines to the hosts file, users must flush their DNS cache using system-specific commands to apply the changes immediately. The technique is useful for blocking distracting sites or unwanted telemetry hosts, but has limitations — it does not affect apps that hardcode IPs, VPN traffic, or other devices on the network. For broader, network-wide blocking, DNS or firewall-level solutions are recommended instead.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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