How does ipip.ooo check your dns

txthinking

Created at: 15 May 2021

Updated at: 15 May 2021

1. 中文版

中文版 ->

2. ipip.ooo

https://ipip.ooo ->

3. Why the displayed DNS is not the DNS configured by my system

Here you need to understand the working principle of DNS first

Then, assuming that the DNS configuration of your system is 8.8.8.8, you need to query the IP of ipip.ooo. The approximate simplified steps are as follows:

  1. You ask 8.8.8.8 for the record of ipip.ooo
  2. 8.8.8.8 received your query
  3. 8.8.8.8 initiates a query to the name server of ipip.ooo

8.8.8.8 does not necessarily use the 8.8.8.8 IP to initiate a query, usually there is a server cluster inside, and an IP in its IP pool will be used to initiate a query

  1. The name server of ipip.ooo receives the query and displays the IP of the questioner on the web page