TheRook/subbrute — pull request #10 by JordanMilne (2014-12-12 20:34:20+00:00)
Title: Handle wildcard subs with round robin IPs

To handle sites that use wildcard subdomains and also bounce you between load balancers, we keep fetching random subdomains over and over until we're satisfied we've gotten all of the IPs. Ran into this when brute forcing a site that used one of CloudFlare's paid plans, and requesting random subdomains 100 times seemed to get them all.