AS7018 12.17.104.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.17.104.0/2412.17.105.0/2412.17.106.0/2412.17.107.0/2412.17.108.0/2412.17.109.0/2412.17.110.0/2412.17.111.0/24