AS7018 12.190.200.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.190.200.0/2412.190.201.0/2412.190.202.0/2412.190.203.0/2412.190.204.0/2412.190.205.0/2412.190.206.0/2412.190.207.0/24