AS7018 45.203.48.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204845.203.48.0/2445.203.49.0/2445.203.50.0/2445.203.51.0/2445.203.52.0/2445.203.53.0/2445.203.54.0/2445.203.55.0/24