AS7018 154.81.0.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048154.81.0.0/24154.81.1.0/24154.81.2.0/24154.81.3.0/24154.81.4.0/24154.81.5.0/24154.81.6.0/24154.81.7.0/24