VNY does not have an approach facility. All TRACON duties are handled by Socal Tracon which took over from Burbank TRACON(B90) in the early 90's. All that saidwww.laartcc.org/diagrams
The Burbank high and low sectors should cover your area of interest.
Keep in mind that the URL in this is for the VATSIM network, not real-world ATC. We try to keep things there as real as possible, so the layout should be right, but definitely don't rely on it for real-world aviation.