AS7018 12.205.240.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.205.240.0/2412.205.241.0/2412.205.242.0/2412.205.243.0/2412.205.244.0/2412.205.245.0/2412.205.246.0/2412.205.247.0/24