Re:HardCIDR will query ARIN and a pool of BGP route servers
by jlgaddis on Saturday March 18, 2017 @12:58AM
(#13899965)
It simplifies the process of finding the IP address blocks allocated/assigned to an organization.
> HardCidr is written by Jason Ashton, Senior Security Consultant at TrustedSec
I'm guessing it was written with pen-testing in mind.
Edit: the header from the script is good, toss it into the README for great success.