What are the methods for querying second-level domain names?

Query method: 1. Use WHOIS query tool; 2. Use DNS query tool; 3. Use search engine; 4. Use web crawler tool; 5. Use domain name management tool.

Second-level domain name query method

1. Use WHOIS query tool: WHOIS is a A protocol for querying domain name registration information. You can use the WHOIS query tool to query the registration information of a domain name, including the second-level domain name information of the domain name.

2. Use DNS query tool: DNS is the domain name system. You can use the DNS query tool to query the DNS records of a domain name, including the second-level domain name information of the domain name.

3. Use search engine: By entering keywords and domain name in the search engine, you can search for information related to the domain name, including the second-level domain name information of the domain name.

4. Use web crawler tools: Web crawler tools can crawl website information, including the website’s second-level domain name information.

5. Use the domain name management tool: If you have management rights for the domain name, you can use the domain name management tool to view the second-level domain name information of the domain name.

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