Blocking International DNS

Bjørn Mork bjorn at
Thu Nov 25 07:38:30 CST 2010

Joakim Aronius <joakim at> writes:
> * Suresh Ramasubramanian (ops.lists at wrote:
>> This isnt new - there have been proposals elsewhere for a resolver
>> based blacklist of child porn sites.
> Swedish ISPs are required to enforce a DNS blacklist for childporn,
> perhaps also other European countries.

Yes, this has alrady spread to a number of European countries:

> And once you get these things in place you never know where it will end...

Unfortunately, yes.  We already have a pretty ugly example of that:
Telenor (Norwegian ISP) was sued by the music and film industry with a
demand that Telenor should block all access to The Pirate Bay.  The
suggested method was abusing this DNS filter to block access to a number
of Pirate Bay domains.

Luckily the Norwegian court system do sometimes work:

But history usually repeats itself, so I assume this idea will come up
again.  And again.  And again.


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