AS7018 12.138.240.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.138.240.0/2412.138.241.0/2412.138.242.0/2412.138.243.0/2412.138.244.0/2412.138.245.0/2412.138.246.0/2412.138.247.0/24