AS7018 12.4.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.4.72.0/2412.4.73.0/2412.4.74.0/2412.4.75.0/2412.4.76.0/2412.4.77.0/2412.4.78.0/2412.4.79.0/24