AS7018 12.153.232.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.153.232.0/2412.153.233.0/2412.153.234.0/2412.153.235.0/2412.153.236.0/2412.153.237.0/2412.153.238.0/2412.153.239.0/24