He is a domestic shorthair. A tabby and white bicolor. That particular bi-color pattern is called for saddle - more than Harlequin, less than Tuxedo.
I dont see his sides properly, but I suspect he is a classical tabby (bulls-eye tabby, marbled, blotched).
He seems rather slender, with a somewhat prolonged muzzle. My guess is he has an Ancestor, perhaps a granddad. It may be cornish rex, Oriental, or siamese.