AS7018 12.203.200.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Enterprises LLCHost Count: 2046Addressable IPs: 204812.203.200.0/2412.203.201.0/2412.203.202.0/2412.203.203.0/2412.203.204.0/2412.203.205.0/2412.203.206.0/2412.203.207.0/24