Website circumvents adblocking

[agneev]

Hi,

There's this website 9to5mac.com that redirects to ww.9to5mac.com when it detects adblockers, where adblockers seem to be ineffective. Any way out?

[jfb]

How do I determine what domain an ad is coming from?

Block ads or fix broken sites This FAQ is written in the context of finding out how to block an ad that isn't blocked automatically, but the same steps can be used to troubleshoot issues with sites that don't function properly. An example is that sometimes certain payment gateways try to collect metrics on the sale, but these domains are blocked by Pi-hole, so the payment cannot be processed. Also, some links send you through several referrers and if one of them is blocked, you may land on a …

[agneev]

If you have an adblocker, it’ll redirect you to ww.9to5mac.com.

[DL6ER]

@agneev

Any way out?

Pi-hole v5.0 will do deep CNAME inspection. This technique will reveal this forwarding trick and will block the entire query.

[agneev]

@DL6ER

Pi-hole v5.0 will do deep CNAME inspection. This technique will reveal this forwarding trick and will block the entire query.

I’m surprised as to how the ads aren’t blocked in the forwarded domain.

[DL6ER]

It all depends on your blocking list content. If the domain originally requested isn't contained, it cannot be blocked by Pi-hole v4.x. As said, v5.0 implements a much deeper inspection and would have blocked it.

Check

pihole -q 9to5mac.com

whether both www.9to5mac.com and 9to5mac.com are contained. I do not have any of the two on my lists.