AS7018 12.145.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.145.72.0/2412.145.73.0/2412.145.74.0/2412.145.75.0/2412.145.76.0/2412.145.77.0/2412.145.78.0/2412.145.79.0/24