Ammo.net
---------
IP: 173.230.144.85
Host: Linode
Excerpt from portscan: 
	22/tcp   open     ssh     OpenSSH 5.3p1 Debian 3ubuntu4 (protocol 2.0)
	| ssh-hostkey: 1024 ec:72:4a:a4:48:89:34:3a:b8:e6:c4:b4:0c:ba:03:e3 (DSA)    <---
	|_2048 8c:8e:a7:33:cf:e2:6c:6e:d8:95:c5:94:66:a5:21:f9 (RSA)                 <---


gunsforsale.com
---------------
IP: 173.230.147.211
Host: Linode
Excerpt from portscan:
	22/tcp   open     ssh     OpenSSH 5.3p1 Debian 3ubuntu4 (protocol 2.0)
	| ssh-hostkey: 1024 ec:72:4a:a4:48:89:34:3a:b8:e6:c4:b4:0c:ba:03:e3 (DSA)     <---
	|_2048 8c:8e:a7:33:cf:e2:6c:6e:d8:95:c5:94:66:a5:21:f9 (RSA)                  <---


As you can see, the ssh hostkeys are the same for both! This means that both ammo.net and gunsforsale.com are hosted on the same server.


Luckygunner.com
---------------
IP: 38.113.114.59
Host: PSINet, Inc. COGENT-A
Geo Location: http://tejji.com/ip/ip-to-location.aspx?ip=38.113.114.59
	Washington D.C.



bulkammo.com
------------
IP: 38.114.169.53
Host: PSINet, Inc. COGENT-A
Geo Location: http://tejji.com/ip/ip-to-location.aspx?ip=38.114.169.53
	Washington D.C.

Both luckygunner.com and bulkammo.com are hosted at a Cogent datacenter in Washington D.C. They are not hosted on the same server, but I think this pretty much speaks for itself.