AS7018 12.233.16.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.233.16.0/2412.233.17.0/2412.233.18.0/2412.233.19.0/2412.233.20.0/2412.233.21.0/2412.233.22.0/2412.233.23.0/24