AS7018 12.17.168.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.17.168.0/2412.17.169.0/2412.17.170.0/2412.17.171.0/2412.17.172.0/2412.17.173.0/2412.17.174.0/2412.17.175.0/24