Marco, 

tor. 16. jan. 2020 12.50 skrev Marco Paesani <marco@paesani.it>:
I need contact with AS45102 because there is a lot networks with ROA wrong and invalid.
Nobody knows some technical people inside this AS ?

No succes using the contacts listed in their PeeringDB entry? 

https://www.peeringdb.com/net/6824

Chriztoffer