> Is it possible to blacklist some site?

A few ways work for me.

Create a zone and use file "/dev/null"; A lookup will return with status:
SERVFAIL.

Or create a dummy zone without the A records. A lookup will return with
status: NXDOMAIN.

Or for the zone use:
allow-query { none ; };
and lookups will return with status: REFUSED.




Jeremy C. Reed
ISC Sales & Support Engineer