He has a little bit of that Snowshoe look about him in his markings, so it's possible he either has some Snowshoe influence (like Snowshoe x Domestic Longhair), or a Javanese (long-haired Siamese) x bicolor Domestic, which could also produce that coloring. Since exactly what ancestry he has is impossible to prove absent a DNA test, he'd be called a pointed bicolor Domestic Mediumhair. Cute for sure!