AS2386 64.166.144.0/21 CIDR and IP Range Summary.ASN: 2386 - AT&T Data Communications ServicesHost Count: 2046Addressable IPs: 204864.166.144.0/2464.166.145.0/2464.166.146.0/2464.166.147.0/2464.166.148.0/2464.166.149.0/2464.166.150.0/2464.166.151.0/24