AS7018 12.204.192.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.204.192.0/2412.204.193.0/2412.204.194.0/2412.204.195.0/2412.204.196.0/2412.204.197.0/2412.204.198.0/2412.204.199.0/24