AS7018 199.107.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048199.107.72.0/24199.107.73.0/24199.107.74.0/24199.107.75.0/24199.107.76.0/24199.107.77.0/24199.107.78.0/24199.107.79.0/24