Well, there was just enough of the registry visible to determine that it's of the NCC-3*9*1 format. Or at least 3 is the likeliest interpretation of the first number for various reasons, and the last one is obviously 1...
Since we see the great death scene several times, I'd pick three possible registries and accept all
of them - the first might be USS Sitak
, the second USS Borat
, the third USS Eliat