X
AS393456 (X) announces at least four prefixes:
170.4.0.0/24
United States Steel Corporation
1970-01-01
NET-170-4-0-0-1
170.4.0.0-170.4.31.255
170.191.0.0/24
NET-170-191-0-0-1
170.191.0.0-170.191.255.255
170.191.2.0/24
199.248.185.0/24
NET-199-248-185-0-1
199.248.185.0-199.248.185.255
0