AS7018 64.172.144.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409664.172.144.0/2464.172.145.0/2464.172.146.0/2464.172.147.0/2464.172.148.0/2464.172.149.0/2464.172.150.0/2464.172.151.0/2464.172.152.0/2464.172.153.0/2464.172.154.0/2464.172.155.0/2464.172.156.0/2464.172.157.0/2464.172.158.0/2464.172.159.0/24