AS7018 68.21.120.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204868.21.120.0/2468.21.121.0/2468.21.122.0/2468.21.123.0/2468.21.124.0/2468.21.125.0/2468.21.126.0/2468.21.127.0/24