AS7018 63.204.224.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204863.204.224.0/2463.204.225.0/2463.204.226.0/2463.204.227.0/2463.204.228.0/2463.204.229.0/2463.204.230.0/2463.204.231.0/24