AS747 143.73.240.0/20 CIDR and IP Range Summary.ASN: 747 - Headquarters USAISCHost Count: 4094Addressable IPs: 4096143.73.240.0/24143.73.241.0/24143.73.242.0/24143.73.243.0/24143.73.244.0/24143.73.245.0/24143.73.246.0/24143.73.247.0/24143.73.248.0/24143.73.249.0/24143.73.250.0/24143.73.251.0/24143.73.252.0/24143.73.253.0/24143.73.254.0/24143.73.255.0/24