AS7018 216.103.192.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048216.103.192.0/24216.103.193.0/24216.103.194.0/24216.103.195.0/24216.103.196.0/24216.103.197.0/24216.103.198.0/24216.103.199.0/24