AS16967 216.173.224.0/21 CIDR and IP Range Summary.ASN: 16967 - AT&T Corp.Host Count: 2046Addressable IPs: 2048216.173.224.0/24216.173.225.0/24216.173.226.0/24216.173.227.0/24216.173.228.0/24216.173.229.0/24216.173.230.0/24216.173.231.0/24