block url in group policy

hi
i blocked a url  using the content advisor and published it through group policy but the website i block have few dns name so if a user is getting into a diffrent link he can get inside
for example: www.facebook.com and www.he-il.facebook.com its the same site but a diffrent dns
what can i do to block all site related to facebook.com for example
LVL 2
ywainbergAsked:
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Hilal1924Commented:
Use a wildcard in the url .e.g.,
*.facebook.com
*facebook*

Cheers,
Hilal
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E-Z-PCCommented:
I don't know what you have already tried, but using a wildcard such as *.facebook.com should prevent access to any facebook.com content.
Obviously, use the wildcard wherever it is needed. i.e. facebook.*, *.facebook.com, *facebook* etc.
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E-Z-PCCommented:
Sorry for the duplicate, looks like Hilal1924 had the same idea. Didnt refresh browser quick enough. :-)
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Hilal1924Commented:
@ E-Z-PC .. It's all Good :)
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