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Thursday, March 27th, 2025 2:19 PM

How to block specific websites

I  have an XB8 Gateway modem and Im trying to block a specific websites. I used the admin tool, entered the website, and selected "always", but it doesnt work. I have searched all over the Xfinity mobile app and cannot find a way to block specific site anywhere. Is there any way to make this work? Thank you

et

Official Employee

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2.5K Messages

5 days ago

 

user_n0jzm7

Great question—and you're definitely not alone in this one! Blocking specific websites can be a little tricky depending on the setup, and I totally get how frustrating it is when it feels like you're doing everything right but it still doesn’t work.

 

With the XB8 Gateway, the built-in admin tool used to offer basic website blocking features, but they can sometimes be hit-or-miss—especially with websites that use multiple domains or HTTPS encryption (which most do these days). That’s likely why entering the site manually isn’t giving you the results you expected.

 

Right now, the best way to manage content and block specific sites is through xFi Parental Controls in the Xfinity app. While it doesn’t let you block specific URLs directly, you can pause devices, schedule offline times, and apply content filters for things like adult content, which helps a lot with general safety and control.

 

If you're looking for more precision—like blocking certain websites by name—you might consider adding a third-party tool like OpenDNS or using a router with more advanced parental controls alongside your XB8. Totally understand that’s not ideal, but it gives you much more control over individual websites.

 

We know these tools aren’t perfect yet, and we appreciate your patience—it’s something we’re always looking to improve. If you want help walking through the options or setting up one of those alternatives, we’ve got your back!

 

Let us know what you'd like to try and we’ll guide you step by step.

 

Expert

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109.5K Messages

5 days ago

@user_n0jzm7 

@XfinityAirelle wrote;

"or using a router with more advanced parental controls alongside your XB8".

Just as a reminder, I will add that if you do so, be sure to put the XB8 in to bridge mode so that it acts only as a straight / plain vanilla cable modem or you will have an undesirable "double NAT" condition on your home network. 
 
Google "double NAT" for info about its potential pitfalls. It may break some applications.

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