AS7018 216.100.40.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048216.100.40.0/24216.100.41.0/24216.100.42.0/24216.100.43.0/24216.100.44.0/24216.100.45.0/24216.100.46.0/24216.100.47.0/24