These infos come from a thread in La Cochonne about Bulgarian girls in porn.
They were given by Christian Lavil, the director of Hot Airlines.
Four girls are unknowns, XNK4917 to 4020.
First, all these girls are from Bulgaria and have done other scenes for movies he shot in Bulgaria.
He specifically IDed 2 girls :
XNK4917 in Mira
XNK4918 is Alex and he said that she is in the movie called Petites coquines bulgares not listed here and that I have not seen.
These infos were confirmed by membres of the forum.