AS17229 206.18.144.0/21 CIDR and IP Range Summary.ASN: 17229 - AT&T Enhanced Network ServicesHost Count: 2046Addressable IPs: 2048206.18.144.0/24206.18.145.0/24206.18.146.0/24206.18.147.0/24206.18.148.0/24206.18.149.0/24206.18.150.0/24206.18.151.0/24