When you enter a domain name into the address bar of the Web browser, Domain Name Service (DNS) translates the domain name into an IP address that the computer understands. Your computer then displays the website based on this IP address.
If you prefer that the DNS server display an error message when it can't match the domain you've entered with an IP address, you can change the DNS settings in the router or in the operating system. Either method prevents DNS Assistance servers from displaying a page of links to sites that have similar domain names to the one you entered.
Note: If you change the DNS settings in the operating system, you could encounter problems if you travel with this computer. You may want to change back to the original settings to connect to a hotel network, for example.