SliceHost 67.23.0.0/19

GMTA:) 67.23.0.0/19 also includes .cloud-ips.com, an increasingly (in)famous hide-behind.

Related block-worthy 'slices' --

67.207.128.0/19
(includes)
.slicehost.net
.slicehost.com

173.45.224.0/19

Slicehost.com rWHOIS is (wait for it) --

72.32.0.0/16
(.rackspace.com)

Those companies' CIDRs are all over the place but the above earned spots on my "Worst" list.

Thanks Pfui. Had all the Slicehost ranges but not their rackspace home.

One more for good measure...

174.143.91.224/27
(.rackspacecloud.com)

(After AWS [webmasterworld.com], methinks "cloud" in any Hostname warrants redirecting.)

Excellent, thanks

The whole of 174.143/16 is rackspace. Not known to me before so thanks for the heads-up, pfui! :)

For SliceHost I have:

67.23.0.0-67.23.47.255
173.45.224-173.45.255.255
208.78.96.0-208.78.103.255
209.20.64-209.20.95.255

For Rackspace (may include slicehost ranges):

67.192.0.0-67.192.255.255
67.207.128.0-67.207.223.255
69.20.0.0-69.20.127.255
72.3.128.0-72.3.255.255
72.32.0.0-72.32.255.255
74.205.0.0-74.205.127.255
89.234.0.0-89.234.63.255
92.52.64.0-92.52.127.255
94.236.0.0-94.236.127.255
98.129.0.0-98.129.255.255
173.203.0.0-173.203.255.255
174.142.0.0-174.143.255.255
204.232.128.0-204.232.255.255
212.100.224.0-212.100.255.255 (this one in UK)