Need the IP of China Tax Network (www.ctax.org.cn).

DNS resolution can be done under CMD window, and nslookup can be used.

For example: C: \ Windows \ System32 > NSLOOKUP www.ctax.org.cn (enter)

Server: ns-px.online.sh.cn

Address: 202.96.209.5.

Name: www.ctax.org.cn.

Address: 2 19.237.2 18.224

2 19.237.2 18.224 is the IP of the searched URL.