A total of 20 sites are hosted on 198.41.209.139.
Here are the first 5 as they would appear when searched for:
reddit.com/user/NakedKatie
(null)
reddit.com/user/CGDarden
(null)
reddit.com/user/aivzdog
(null)
reddit.com/user/jezebaal
(null)
reddit.com/user/nefootsteps
(null)
...and the list of the remaining 15:
reddit.com/user/michaelwiener
reddit.com/user/Squalor-
reddit.com/user/hunterofthesnark
reddit.com/user/dougburr
reddit.com/user/fuhrerfriday
reddit.com/user/kesk2006
reddit.com/user/MRC1986
reddit.com/user/namembal
reddit.com/user/bselite
reddit.com/user/andye453
reddit.com/user/Polished1
reddit.com/user/asolitudinarian
reddit.com/user/Your-Doing-It-Wrong
reddit.com/user/Submerge25
reddit.com/user/Alenola