AS17816 163.142.144.0/21 CIDR and IP Range Summary.ASN: 17816 - China UnicomHost Count: 2046Addressable IPs: 2048163.142.144.0/24163.142.145.0/24163.142.146.0/24163.142.147.0/24163.142.148.0/24163.142.149.0/24163.142.150.0/24163.142.151.0/24