Snapchat block ,can block 'cept Chrome browser

[brcisna]

Hello,

trying to block snapchat in a school setting.

Found i good how to on blocking snapchat by simply blocking/blacklisting about 6 domains which are listed in the howto.
This does block snapchat in Internet Explorer, Firefox, but will still be available on Google Chrome. This is on both Linux and Windows workstations.
Has anyone else run into this scenario,and what the fix for it would be.
Have tested this on fresh installs of Windows 10 and Debian Buster.

Thanks

[dotdash]

Maybe DoH? Check the browser settings, try blocking dns.google