I use these domains for netflix vpn exclusions on v4 firmare (flint), and it works for most devices and series. But my Chromecast with Google TV sometimes cannot connect to a few series and fails.
However, on my phone and on the browser everything works perfectly.
Maybe the netflix tv app, uses some other domains… so if someone knows, please share
netflix.com
netflix.net
nflxvideo.com
nflxvideo.net
nflxext.com
nflxext.net
nflxso.com
nflxso.net
nflximg.com
nflximg.net