What does second-level domain name mean?

云罗郡主
Release: 2018-12-15 09:18:53
Original
52061 people have browsed it

Our domain names can be divided into first-level domain names and second-level domain names. Many people have a deep understanding of first-level domain names. So what is a second-level domain name? Let’s summarize it below.

What does second-level domain name mean?

1: What does the second-level domain name mean?

The second-level domain is also called the second-level domain name. The second-level domain name is relative to The first-level domain name (com) is under the top-level domain name. Generally speaking, the second-level domain name is the penultimate part of the domain name.

2: The difference between the first-level domain name and the second-level domain name

The second-level domain name exists under the first-level domain name. If the top-level domain name does not exist, then the second-level domain name The domain name must not exist. On the contrary, the second-level domain name will not be affected by the first-level domain name.

The first-level domain name is composed of two or more words. There is a little separation in the middle, and the entire domain name has a point. The second-level domain name is a subordinate of the first-level domain name. There are two second-level domain names. point.

3: Misunderstandings of second-level domain names

Second-level domain names generally use large websites, which can reduce the length of the URL. Under normal circumstances, com.cn cannot be called It is a second-level domain name, generally called a second-level domain. The second-level domain name has its own branches. However, many people regard www as the first-level domain name. In fact, this is incorrect. .com is the first-level domain name, and baidu.com is the second-level domain name. level domain name.

The above is a complete introduction to what the second-level domain name means. If you want to know more about operation and maintenance knowledge, please pay attention to the PHP Chinese website.


The above is the detailed content of What does second-level domain name mean?. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact [email protected]
Latest Issues
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!