AS7018 12.236.240.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.236.240.0/2412.236.241.0/2412.236.242.0/2412.236.243.0/2412.236.244.0/2412.236.245.0/2412.236.246.0/2412.236.247.0/24