AS20057 198.228.224.0/20 CIDR and IP Range Summary.ASN: 20057 - AT&T Mobility LLCHost Count: 4094Addressable IPs: 4096198.228.224.0/24198.228.225.0/24198.228.226.0/24198.228.227.0/24198.228.228.0/24198.228.229.0/24198.228.230.0/24198.228.231.0/24198.228.232.0/24198.228.233.0/24198.228.234.0/24198.228.235.0/24198.228.236.0/24198.228.237.0/24198.228.238.0/24198.228.239.0/24