Go CLI and Library for quickly mapping organization network ranges using ASNinformation.
Link: https://github.com/projectdiscovery/asnmap
A quick Python3 script to scrape the IPv4/IPv6 address database on networksdb.io for a given company name, and output a CSV containing the data.
GitHub: https://github.com/x-originating-ip/OrgRanger
You can find subdomains on VirusTotal by using the ‘search’ (right next to file and url) and enter the domain you want.
Example: https://www.virustotal.com/gui/domain/google.com
Go to the ‘RELATIONS’ tab and view ‘Subdomains’
Find netblocks owned by a company
https://github.com/NetSPI/NetblockTool