Thank you! Exactly what I was looking for!yes, you can use the following command: /chunkloaders
That will open a window allowing you to see all the loaded chunks (the window may open behind your game window). There's a dimension tab where you can switch to the Nether, End, Twilight Forest, or wherever.
So I'm using this is SSP and I tracked down the loaders with yellow boxes but i have apretty big area of about 16-20 chunks that are red with no yellow. I have never built here and its loaded. Forgive my noobness on this but does anyone know the cause?Red area without yellow dots in it somewhere are chunkloaders that aren't from a player existing. Because chunks (And Minecraft) are square, it's easy to tell.