AS7018 63.203.160.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204863.203.160.0/2463.203.161.0/2463.203.162.0/2463.203.163.0/2463.203.164.0/2463.203.165.0/2463.203.166.0/2463.203.167.0/24