AS7018 12.3.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.3.72.0/2412.3.73.0/2412.3.74.0/2412.3.75.0/2412.3.76.0/2412.3.77.0/2412.3.78.0/2412.3.79.0/24