AS7018 68.21.192.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204868.21.192.0/2468.21.193.0/2468.21.194.0/2468.21.195.0/2468.21.196.0/2468.21.197.0/2468.21.198.0/2468.21.199.0/24