The traffic control system sort all items by file host or cloud name.
If guys want to know how to confirm what host or cloud has the download links by item code, you need crossing-refer the below document.
The item code separate to tw parts, left is the english character and the right is the number, after combining the left and right information by crossing-refer, you can get download flinks from.
And, if the item is uploaded to the specified host or cloud, the background color of the crossing region is green.
Check this thread to get an example learning how to get the host information from item code.