AS7018 12.10.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.10.72.0/2412.10.73.0/2412.10.74.0/2412.10.75.0/2412.10.76.0/2412.10.77.0/2412.10.78.0/2412.10.79.0/24