How can I check if the domain name is K?

When registering a new domain name, you need to check whether it has been crossed by K, especially Google or Baidu K, even a face change may not be effectively indexed by search engines for a long time.

The method is as follows:

1. Use the site:/link: two search commands to view the domain name's indexing status. If the value is 0, but there are many external connections, the domain name has been K.

2. directly enter the website address query in the search engine. If several results are found to contain the domain name, and the site does not, the domain name may already be K. (There is a possibility that the search engine index is not immediately published in the search results .)

3. Check the website history page and website world rankings to determine whether the domain name is an old domain name.