The owner of the Oakland Raiders tells TMZ Sports ... he does in fact own the domain LasVegasRaiders.com -- and has for years -- "just in case" the Silver and Black move to Sin City.
We spoke with Mark Davis who confirmed he personally bought the domain back in the '90s "in case the team ever wound up in Vegas."
"I think it's only $8 per year ... so, it's worth it in case we end up there."
When asked why he liked Vegas as a possible destination, Davis said -- "It's close to where we are now. It would be a close trip for our fans and there are a lot of sports fans who visit Vegas."
One other interesting thing ... Davis told us he believes the Raiders are the only NFL team that could "exist" out in Vegas.
So far, it seems Vegas could still be in the cards for the team -- especially with Las Vegas Sands honcho Sheldon Adelson gunning to build a $1 billion stadium on the UNLV campus.