AS7018 64.172.240.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409664.172.240.0/2464.172.241.0/2464.172.242.0/2464.172.243.0/2464.172.244.0/2464.172.245.0/2464.172.246.0/2464.172.247.0/2464.172.248.0/2464.172.249.0/2464.172.250.0/2464.172.251.0/2464.172.252.0/2464.172.253.0/2464.172.254.0/2464.172.255.0/24