AS45090 172.81.192.0/21 CIDR and IP Range Summary.ASN: 45090 - Shenzhen Tencent Computer Systems Company LimitedHost Count: 2046Addressable IPs: 2048172.81.192.0/24172.81.193.0/24172.81.194.0/24172.81.195.0/24172.81.196.0/24172.81.197.0/24172.81.198.0/24172.81.199.0/24