It looks like I didn’t release this update to my lookup tools.
lookup-hosts.py has a new argument: -R. This does a reverse lookup of the IP addresses (thus after it resolved the hostname).
And now you can also use letters as a counter: test-[a-z].com
lookup-tools_V0_0_2.zip (https)
MD5: 310904722F900FA34C567FC38634124E
SHA256: 85626574A99BF4D2AB786D8C2FF5B8F6649F1FC7410F1786A24EF0201AAF64AA
Didier Stevens 