The person you bought the rabbit from didn't know what breed it
was??? If they didn't sell the rabbit to you as a pure bred it
probably isn't. If it has really short fur it could be a rex. White
with black spots means the color is broken. The color variety is
broken as opposed to a black rabbit or a white rabbit yours is a
broken rabbit. A Broken Rex Rabbit is my best guess but I would bet
that if you paid less than $30.00 for it it is a crossbreed rabbit,
not a rex.