https://raw.githubusercontent.com/etsubu/BlockAdDomains/master/AdDomains.txt

Domains that are not included;

audio-ec.spotify.com
audio2.spotify.com
geo3.ggpht.com
heads-ec.spotify.com
omaze.com
open.spotify.com
pagead.l.doubleclick.net
pagead46.l.doubleclick.net
s0.2mdn.net
spclient.wg.spotify.com
u.scdn.co