Lithuania, it's now called Bifinity UAB after changing their name from Binance UAB. They file regulatory documents from their address in Vilnius
And as for Bifinity, please read https://www.reuters.com/technology/binances-books-are-black-.... One relevant part:
> Bifinity, whose annual report said it has 147 employees, does not have a website or publicly provide any contact details. The company's chief executive, Saulius Galatiltis, did not respond to requests for comment. At its registered address at a business centre in Lithuania's capital Vilnius, Bifinity is not listed on the tenants' board.
This is not the first time a Binance organization has claimed to be filing from / regulated in a particular country or location, but when anyone actually tries to look into it there's nobody there or the registration was withdrawn.