Several hosting companies have nshosts.com listed as their DNS. Who are they? A search came up with nothing useful :(

Please enlighten me.

The only information I got about them is they are with rackspace:
whois 209.163.250.154@arin.net
[arin.net]
FIBRCOM, Inc. (NETBLK-FIBRNET4) FIBRNET4 209.163.128.0 - 209.163.255.255
Rackspace.com (NETBLK-RACKSPACE4-248--22A) RACKSPACE4-248--22A
209.163.248.0 - 209.163.251.255

To single out one record, look it up with "!xxx", where xxx is the
handle, shown in parenthesis following the name, which comes first.

The ARIN Registration Services Host contains ONLY Internet
Network Information: Networks, ASN's, and related POC's.
Please use the whois server at rs.internic.net for DOMAIN related
Information and whois.nic.mil for NIPRNET Information.

nshosts=webstrikesolutions
http://www.webstrikesolutions.com/reselling.html

I wonder what nshosts is supposed to stand for anyway. It could either be "Name Server hosts" or "No Such hosts"...