AS7018 12.138.224.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.138.224.0/2412.138.225.0/2412.138.226.0/2412.138.227.0/2412.138.228.0/2412.138.229.0/2412.138.230.0/2412.138.231.0/2412.138.232.0/2412.138.233.0/2412.138.234.0/2412.138.235.0/2412.138.236.0/2412.138.237.0/2412.138.238.0/2412.138.239.0/24