AS7018 12.151.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.151.72.0/2412.151.73.0/2412.151.74.0/2412.151.75.0/2412.151.76.0/2412.151.77.0/2412.151.78.0/2412.151.79.0/24