AS7018 12.153.8.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.153.8.0/2412.153.9.0/2412.153.10.0/2412.153.11.0/2412.153.12.0/2412.153.13.0/2412.153.14.0/2412.153.15.0/24