I need some help. Really new to this. I am looking for a provider that is fast to the US but provides US based HD quality IPTV. My main device will be a AppleTV (newer gen). My two other devices will be android. So I would also need a provider that allows me to add a extra slot (it will be on the same ip). What do I look for to know I can get this all working?
Your best bet is to get a dev account and install kodi on your apple tv. Or replace that closed box piece of shit with something more friendly. There is a stalker tv app but honestly I dunno if it actually works myself, as I don't think anyone here even uses apple TV to watch IPTV because of how locked down the device is.
What you are looking for is a provider with multiroom. With that appletv odds are no one wants to touch it with a 10 foot pole. Your android boxes are a piece of cake though.