AS7018 12.133.224.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.133.224.0/2412.133.225.0/2412.133.226.0/2412.133.227.0/2412.133.228.0/2412.133.229.0/2412.133.230.0/2412.133.231.0/2412.133.232.0/2412.133.233.0/2412.133.234.0/2412.133.235.0/2412.133.236.0/2412.133.237.0/2412.133.238.0/2412.133.239.0/24