Here is the domain info for antifa.com
Registered Jul 14, 2010
29 changes on 29 unique IP addresses over 16 years
2 registrars
8 changes on 7 unique name servers over 18 years
Doing a search on the antifa.com tech contact address P.O. Box 0823-03411, Panama PA returns these results (pic related) and and interesting law suit with Microsoft as plaintiff vs JOHN DOES 1-2, CONTROLLING A COMPUTER NETWORK AND THEREBY INJURING PLAINTIFF AND ITS CUSTOMERS
https://noticeofpleadings.com/phosphorus/files/6_[PROPOSED]%20Microsoft%20Phosphorus%20Third%20Suppl.%20PI%20Order.pdf