AS16966 199.106.144.0/21 CIDR and IP Range Summary.ASN: 16966 - AT&T Corp.Host Count: 2046Addressable IPs: 2048199.106.144.0/24199.106.145.0/24199.106.146.0/24199.106.147.0/24199.106.148.0/24199.106.149.0/24199.106.150.0/24199.106.151.0/24