Hey @joranbeasley, looks good.
I'm not yet sure how this should be integrated in the main run. That is the reason I've avoided adding this as of yet.
If you have any ideas how to actually combine this with the main run I would love to hear (and see) them.
Rembmer - all tasks are on an event loop while url/subdomain bruteforcing alsorun a thread pool and nmap runs on its own thread in the background.

Looking forward to your response. Nonetheless, this is much appreciated.

I don't offhand I started to look into that ... I use these methods in my own little ip scanner thing (thats just implemented using python sockets and paramiko) and saw you had this on your futures list, and i am pretty happy with this implementation in my own project, and figured maybe you could use the utility methods) ... although maybe you just want to use nmaps target ranges argument (which looks different than 2 quad dotted ip addresses) (I committed the utils before I went and looked into how you might use them) ... but i can look into it more :)