AS7018 12.231.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Enterprises LLCHost Count: 2046Addressable IPs: 204812.231.72.0/2412.231.73.0/2412.231.74.0/2412.231.75.0/2412.231.76.0/2412.231.77.0/2412.231.78.0/2412.231.79.0/24