DNS 2 GeoIP is a simple python script that brute forces DNS and subsequently geolocates the found subdomains. It is useful for determining which services a company hosts off site or on site during a penetration test.
You can download it from the following link: https://packetstormsecurity.com/files/download/118036/dns2geoip.py.txt
Source: https://packetstormsecurity.com/files/118036/DNS-2-GeoIP.html