This tool enumerates hostnames from Bing.com for an IP address. Bing.com is Microsoft’s search engine which has an IP: search parameter. Written in Bash for Linux. Requires wget.
You can download it from the following link: https://packetstormsecurity.com/files/download/83338/bing-ip2hosts-0.1.tar.gz
Source: https://packetstormsecurity.com/files/83338/Bing.com-Hostname-IP-Enumerator.html