A total of 46 sites are hosted on 172.217.20.110.
Here are the first 5 as they would appear when searched for:
youtube.com/user/sandiegodentist
(null)
youtube.com/user/xxnights000
(null)
youtube.com/user/Wartator
(null)
youtube.com/user/jugpetrusic
(null)
youtube.com/user/ImmaWISEbiiitch
(null)
...and the list of the remaining 41:
youtube.com/user/elizabethtsm
youtube.com/user/testsiegerde
youtube.com/user/GuitarMansGaming
youtube.com/user/ChocoReaccion
youtube.com/user/0925128370
youtube.com/user/pazudoraman2
youtube.com/user/silvergolf
youtube.com/user/fastandfuriousmovie
youtube.com/user/keeperbay
youtube.com/user/TVTraX
youtube.com/user/FlashFacilitoTips
youtube.com/user/MTVLebanonNews
youtube.com/user/VlogginLife
youtube.com/user/MarissaLace
youtube.com/user/rapoucreve
youtube.com/user/KPopp
youtube.com/user/rendog
youtube.com/user/riceandraw
youtube.com/user/AlexGordonTB
youtube.com/user/jyoti9696
youtube.com/user/alexsonHD
youtube.com/user/thierry66pasteque
youtube.com/user/MaruluExploit
youtube.com/user/MLMMarketing101
youtube.com/user/hugothester
youtube.com/user/azenetmc
youtube.com/user/Crimsixian
youtube.com/user/RadioIfm
youtube.com/user/NiveaRussia
youtube.com/user/MONICAMEDIAS
youtube.com/user/VideoFromSpace
youtube.com/user/shalomkolo
youtube.com/user/NxMOHAMAD
youtube.com/user/Isabellinha629
youtube.com/user/ANSOREN1
youtube.com/user/burn
youtube.com/user/MaganVEVO
youtube.com/user/PublikartWebzine