AS7018 12.20.224.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.20.224.0/2412.20.225.0/2412.20.226.0/2412.20.227.0/2412.20.228.0/2412.20.229.0/2412.20.230.0/2412.20.231.0/2412.20.232.0/2412.20.233.0/2412.20.234.0/2412.20.235.0/2412.20.236.0/2412.20.237.0/2412.20.238.0/2412.20.239.0/24