AS7018 68.90.72.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204868.90.72.0/2468.90.73.0/2468.90.74.0/2468.90.75.0/2468.90.76.0/2468.90.77.0/2468.90.78.0/2468.90.79.0/24