AS7018 12.189.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.189.72.0/2412.189.73.0/2412.189.74.0/2412.189.75.0/2412.189.76.0/2412.189.77.0/2412.189.78.0/2412.189.79.0/24