<s>
CleanBrowsing	B-Protocol
is	O
a	O
free	O
public	B-Operating_System
DNS	I-Operating_System
resolver	I-Operating_System
with	O
content	O
filtering	O
,	O
founded	O
by	O
Daniel	O
B	O
.	O
Cid	O
and	O
Tony	O
Perez	O
.	O
</s>
<s>
It	O
supports	O
DNS	O
TLS	O
over	O
port	O
853	O
and	O
DNS	B-Protocol
over	I-Protocol
HTTP	I-Protocol
over	O
port	O
443	O
in	O
addition	O
to	O
the	O
standard	O
DNS	O
over	O
port	O
53	O
.	O
</s>
<s>
CleanBrowsing	B-Protocol
filters	O
can	O
be	O
used	O
by	O
parents	O
to	O
protect	O
their	O
children	O
from	O
adult	O
and	O
inappropriate	O
content	O
online	O
.	O
</s>
<s>
CleanBrowsing	B-Protocol
has	O
3	O
standard	O
filters	O
accessible	O
via	O
the	O
following	O
anycast	B-Protocol
IP	O
addresses	O
:	O
</s>
