Wildcards For Hosts

Is there any way to setup a host address that uses wildcards, for instance *.google.com to block or allow access to all urls for google.com? I tried *.google.com and just google.com, but it still didnt work. I really didnt want to have to setup a rule for each url.

Just block 74.125.19.99

it should work
(works for me)

Is it not possible to use wildcards when defining a host?