AS747 144.104.248.0/21 CIDR and IP Range Summary.ASN: 747 - Headquarters USAISCHost Count: 2046Addressable IPs: 2048144.104.248.0/24144.104.249.0/24144.104.250.0/24144.104.251.0/24144.104.252.0/24144.104.253.0/24144.104.254.0/24144.104.255.0/24