Here’s a list I’ve collated but is as yet untested:
amazonaws.com
dvd.netflix.com
nflxext.com
flxvpn.net
netflix.ca
netflix.com
netflix.com.au
netflix.net
netflixdnstest10.com
netflixdnstest1.com
netflixdnstest2.com
netflixdnstest3.com
netflixdnstest4.com
netflixdnstest5.com
netflixdnstest6.com
netflixdnstest7.com
netflixdnstest8.com
netflixdnstest9.com
netflixinvestor.com
netflixstudios.com
netflixtechblog.com
nflxext.com
nflximg.com
nflximg.net
nflxso.net
nflxvideo.net