[salamandersauce]

Netflix is pretty great for this. Most of the Japanese stuff they have has both Japanese audio and subtitles even outside Japan. It's pretty anime heavy though. Rakuten Viki has some too but it's done by fans and not always complete!

[fomine3]

I watch anime in Netflix Japan. I can confirm that there are many new anime without any sub/dub except Japanese, maybe because those anime won't get enough enjoyable foreign watchers (except weebs).

[nvarsj]

As someone that follows seasonal anime, I'm surprised how little isn't subbed. I haven't found a single thing yet which didn't have subs. Every popular show is subbed by crunchyroll/funimation, and less popular things (like Godzilla S.P. in the last season, stuck in Netflix jail) had fansubs.