No.
Damn you below me, now i have to write something for this not to be Spam >(
No they arnt real, I think it would be very hard for a culture to have that technology before it is destroyed.
And other cultures may not even want to explore.
And the universe is so big, and so old, i mean... its like.... I dont think advanced species may even exist at the same time at all, and using the Human race as an example, techology also makes a race more self destructive....