At which wilderness level am I unable to teleport?

Question

I heard that you can't use teleports past a certain wilderness level and I would like to know after which level that happens.

And is that level different for the various teleport options?

Answer 1

As the wiki says,

Up to level 30, enchanted dragonstone jewellery, the Pharaoh's Sceptre and grand seed pods from the Gnome Restaurant may be used, and a ring of life will save you if activated. Other forms of teleportation can be used up to level 20.