It looks like this Part has been superseded by LEGO Part 10247 Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib].
Click on a colored part below to see the Sets and MOCs that use part 2444 Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] in that color. You can find an overview of all LEGO Colors here.
If a color is missing, it probably needs to be added to a Set Inventory.
This part has been used by MOCs in the following colors but not officially released.