[RareSoft]

Could Australian ISPs be instructed to just blacklist Google's and Facebook's Ad servers nationally?

[shakna]

There are currently several sites banned in Australia, and the blacklisting took the form of ISPs hijacking the DNS lookup. Which means it is totally ineffective. Our government is not well known for mandating the right tool for the right job, when it comes to tech.

[batiudrami]

Sure but custom DNS is not something everyone can or will do, and businesses certainly won't allow it.

[shakna]

Sure, but there are a few caveats to that:

+ Firefox doesn't use the system DNS by default anymore (Defaults to the DoH provider, usually Cloudflare)

+ Chrome doesn't use the system DNS by default anymore (Defaults to Google's)

+ Businesses often set the default DNS to use Google's, not their ISPs.

[tikkabhuna]

Perhaps the Australian government would prohibit Australian companies from advertising with FB/Google?

[speedgoose]

China has the technology.