AS7018 12.231.0.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Enterprises LLCHost Count: 2046Addressable IPs: 204812.231.0.0/2412.231.1.0/2412.231.2.0/2412.231.3.0/2412.231.4.0/2412.231.5.0/2412.231.6.0/2412.231.7.0/24