AS7018 12.204.40.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.204.40.0/2412.204.41.0/2412.204.42.0/2412.204.43.0/2412.204.44.0/2412.204.45.0/2412.204.46.0/2412.204.47.0/24