Which UIC is WAY801?

Generally, it's a semi-generic UIC they put on your orders that will show you what Brigade/Regiment you're on orders to, but you may not get your specific pinpoint slot until you get there. Searching for that brings up HHT, 3D Cavalry Regiment (WAY8AA). So depending on your MOS you'll end up anywhere in 3rd Armored Cavalry Regiment (Stryker).

If you don't have a cac enabled computer go to the army family readiness group website and use the unit FRG group search function, go to advance search and it will let you search by UIC. It's a round about way but it's the only way I know how to find one without a CAC reader.