AS17225 206.19.56.0/21 CIDR and IP Range Summary.ASN: 17225 - AT&T Enhanced Network ServicesHost Count: 2046Addressable IPs: 2048206.19.56.0/24206.19.57.0/24206.19.58.0/24206.19.59.0/24206.19.60.0/24206.19.61.0/24206.19.62.0/24206.19.63.0/24