AS7018 170.109.144.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048170.109.144.0/24170.109.145.0/24170.109.146.0/24170.109.147.0/24170.109.148.0/24170.109.149.0/24170.109.150.0/24170.109.151.0/24