AS7018 12.40.184.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.40.184.0/2412.40.185.0/2412.40.186.0/2412.40.187.0/2412.40.188.0/2412.40.189.0/2412.40.190.0/2412.40.191.0/24