AS7018 12.221.104.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.221.104.0/2412.221.105.0/2412.221.106.0/2412.221.107.0/2412.221.108.0/2412.221.109.0/2412.221.110.0/2412.221.111.0/24