No.
Since day one of the name change the official stance has been "We are not ULL."
Lone exception. www.Louisiana.edu was backed up for a while with ull.edu but it sent visitors to Louisiana.edu
Other than that ULL has always been incorrect.
The confusion comes in because the law suggested ULR as an option for University of Louisiana at Rayne, but made no demands.
ps they dropped the ull.edu relay page a decade ago.