Very interesting.
Are you thinking it is just the white belly creeping up the sides or a sign of piebaldism?
Also, did the snake look like this when it was a hatchling, or did it develop this white as it grew?
If you prove it to be piebald, treasure that one, because it's going to bring you lots of $$$$$.
Good luck!
Here's a photo of my 2002 bloodreds:

-----
alstiver@hotmail.com
Current snakes:
1.0 2001 Hypo snow cornsnake
0.1 2002 Pastel Ghost cornsnake
1.1 2002 Bloodred cornsnakes
To be added when it gets warmer:
0.1 1998 Het Hypo, Het Caramel cornsnake
1.0 2000 Hypo Het Caramel cornsnake