DNS-based block list information/database. Resource to find out information on DNS block lists and check IPs to see if the are block listed in over 100 blacklist in just seconds.
NSA-Servers at key places on the Internet backbone can react faster than other websites can. By exploiting that speed difference, these servers can impersonate a visited website to the target before the legitimate website can respond, thereby tricking the target's browser to visit a Foxacid server.