8.12.17.12 is registered to CHOOPA, LLC in Matawan, NJ.
66.55.158.4 is registered to Gameservers (parent is CHOOPA) in Newark, NJ.
74.91.120.127 is registered to Nuclearfallout Enterprises, Inc. in Dallas, TX.
74.91.124.109 is registered to Nuclearfallout Enterprises, Inc. in Chicago, IL.
216.52.148.178 is registered to Nuclear Fallout Enterprises in Chicago, IL.
As I said earlier, that's just where the addresses are registered. The physical machines using those IP addresses could be in entirely different locations.