AS7018 12.177.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.177.72.0/2412.177.73.0/2412.177.74.0/2412.177.75.0/2412.177.76.0/2412.177.77.0/2412.177.78.0/2412.177.79.0/24