AS17227 12.66.88.0/21 CIDR and IP Range Summary.ASN: 17227 - AT&T Enhanced Network ServicesHost Count: 2046Addressable IPs: 204812.66.88.0/2412.66.89.0/2412.66.90.0/2412.66.91.0/2412.66.92.0/2412.66.93.0/2412.66.94.0/2412.66.95.0/24