AS7018 12.144.184.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.144.184.0/2412.144.185.0/2412.144.186.0/2412.144.187.0/2412.144.188.0/2412.144.189.0/2412.144.190.0/2412.144.191.0/24