AS7018 75.15.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204875.15.72.0/2475.15.73.0/2475.15.74.0/2475.15.75.0/2475.15.76.0/2475.15.77.0/2475.15.78.0/2475.15.79.0/24