If your institution, employer, or local authority restricts access to certain sites it's often because of DNS-based content restrictions. DNS is the internet’s naming protocol and it maps human-readable names to machine-readable addresses, translating website names like facebook.com into IP addresses that your computer can understand. When access is denied it’s usually because the DNS server you’re using has been programmed to refuse lookup requests for that address.

To overcome web filtering you can modify your network’s DNS configuration to use a third-party DNS provider that doesn’t enforce the same filters. Widely recommended servers are Google’s public DNS at 8.8.8.8 and 8.8.4.4 or Cloudflare’s privacy-focused DNS at 1.1.1.1 and 1.0.0.1. These servers are designed to be fast and neutral and they usually refrain from filtering by regulatory rules.

For Windows users you can change your DNS settings by going to Network and Internet Settings, choosing your current network adapter, clicking Properties, then IPv4 properties. You can then input the new DNS addresses. On macOS go to System Settings, Network & Internet, jun88 đăng nhập choose your active interface, click Advanced, then DNS Servers, and add the new servers. On mobile devices like Android or iPhone you’ll find DNS options under Wi-Fi settings by tapping the network you're connected to.

Once you’ve updated your DNS settings restart your browser or device to make sure the changes take effect. Your browser will now resolve sites that were previously blocked. Remember that changing DNS doesn’t mask your IP address or encrypt your traffic. For enhanced security consider using a encrypted tunnel service combined with custom DNS.

This method won’t work for every restriction because some networks use deeper filtering methods like IP blocking or DPI-based filtering. In the majority of typical scenarios switching to a open resolver is a quick and reliable workaround. Verify that your actions align with workplace or school guidelines when making these changes.

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Pub: 10 Feb 2026 10:38 UTC

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