AS7018 12.203.208.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.203.208.0/2412.203.209.0/2412.203.210.0/2412.203.211.0/2412.203.212.0/2412.203.213.0/2412.203.214.0/2412.203.215.0/2412.203.216.0/2412.203.217.0/2412.203.218.0/2412.203.219.0/2412.203.220.0/2412.203.221.0/2412.203.222.0/2412.203.223.0/24