Ability to tell what dimension an entity is in [ScriptingAPI]

Currently with the scripting API, there is no way to get the dimension that an entity exists in, I my case, I would like to stop players from being able to spawn my entity in the Nether, but the point at which the entity is created, I no longer have reference to which player is spawning it.

Perhaps it might make sense for it to exist on the minecraft:position component?

--AtomicBlom