If you came here because of some network traffic from an IP related to DNSMine.com, it is almost certainly part of this project. Unless you are responsible for lots of domains or IPs, there should be minimal traffic. If you have questions, you can contact DNSmine [at] gmail.com. Specifically, unless you have a non-standard setup, you should see at maximum 3-4 hits per domain and 1 hit per IP you control, per day. Got a Class A IP range? You might see a fair bit of traffic, but if you've got an organization that needs 16 million IPs, you should expect a fair bit of traffic. :) But if there is a problem, be sure to contact us.
The DNS traffic tends not to draw many people here, but the web traffic definitely does! The goal of the web crawling ultimately is to get statistical information, such as the percentage of IPs that use various webservers, the percentage of domains in various languages, locations of the domains, etc. Currently, the web traffic only hits the main page for domains and/or one contact page. It does not know what an E-mail address is, so it doesn't look for them or store them.