DNSDigger.com - A massive reverse resolver domain search engine that lets you dig deeper into the Net. DNSDigger.com is a service that lets you get more information about an domain name. It can show you what other domain names is hosted on a server. For example can that information be a valuable data for a hosting company that want to estimate how many customers a competitor has or se what other domains is hosted on a shared server and estimate the likelihood of that server being DDOSed.