The public instance is currently aggregating information from the providers list on that page. I will add more as I come across them or they become available. If you have data that could benefit the security community and are capable/interested in sharing it please contact me up and I will gladly assist in adding it to our feeds.
I will be moving the server this service is on pretty soon to EC2, I will make a post before I do so. Also if you install the perl client and want to query a list of IPs/Domains, run the following command:
for i in `cat input.txt`; do cif -Sq $i; cif-output.txt; done
cif-output.txt = results
Also if you are interest in installing your own server I highly recommend you use the EC2 instructions that Wes Young has added to the collective intelligence framework project site. created.