Why is Virgin blocking most sites on one laptop but not another?

[simongrover]

I have two MacBook Airs both connected to my home Virgin Media wifi, via a Mesh. One works fine but the other blocks almost all websites. I get the message on the browser that Virgin is blocking the site. I have turned off Child Safe. What can I do?

[用心棒]

On each device open a Terminal and run the command nslookup apple.com to confirm the same Server IP Address is reported. If not then review System Preferences > Network to confirm active service's DNS Server is correctly set.

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