AS7018 12.19.232.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.19.232.0/2412.19.233.0/2412.19.234.0/2412.19.235.0/2412.19.236.0/2412.19.237.0/2412.19.238.0/2412.19.239.0/24