AS7018 12.189.240.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.189.240.0/2412.189.241.0/2412.189.242.0/2412.189.243.0/2412.189.244.0/2412.189.245.0/2412.189.246.0/2412.189.247.0/2412.189.248.0/2412.189.249.0/2412.189.250.0/2412.189.251.0/2412.189.252.0/2412.189.253.0/2412.189.254.0/2412.189.255.0/24