AS7018 12.186.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.186.72.0/2412.186.73.0/2412.186.74.0/2412.186.75.0/2412.186.76.0/2412.186.77.0/2412.186.78.0/2412.186.79.0/24