AS7018 198.11.40.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048198.11.40.0/24198.11.41.0/24198.11.42.0/24198.11.43.0/24198.11.44.0/24198.11.45.0/24198.11.46.0/24198.11.47.0/24