How is a second level domain name defined? Definition of second level domain name

The second-level domain name is the domain name that is hosted under the main domain name, which is the domain name one level to the left of the naked domain name. Generally speaking, a second-level domain name is a format like 3 Ws (www).

For example: "www fuyeor com" has two or more options"."The delimited suffix is a second-level domain name.

The number of levels of domain names is to see how many are behind the domain name"."A delimited suffix.

For example: "fuyeor com" has a to:"."The delimited suffix is a first-level domain name, also known as a naked domain name. where com is the top-level domain, or also known as the root domain name or domain extension.

Because IP addresses are boring, long strings of numbers, to make it easy to remember, you have domain names, such as: "second-level domain fuyeor root domain", or simply "fuyeor root domain" format without a second-level domain.

Among them, in the "second-level domain name fuyeor root domain name", fuyeor is the subject of the domain name; The root domain name is the suffixes com, net, and cn.

Strictly speaking, if you want to see how many levels of domain name it is, then look at how many "" are in front of the suffix"That's right.

For example, it is a first-level domain name, and there is only one "."”

There are two in the middle".It's a second-level domain name.

There are also two in the middle"." is also a second-level domain name;

The second-level domain name is the domain name hosted under the main domain name, and the number of levels of domain names is to see how many are behind the domain name"."A delimited suffix. It is a domain name one level to the left of the naked domain name. Generally speaking, a second-level domain name is a format like 3 Ws (www).

For example: "www fuyeor com" has two or more options"."The delimited suffix is a second-level domain name.

Because IP addresses are boring, long strings of numbers, to make them easy to remember, there are domain names, such as: "second-level domain names." fuyeor.root domain name" or simply "fuyeor" without a second-level domainroot domain".

where, "second-level domain name." fuyeor.The root domain name "fuyeor is the main body of the domain name; The root domain name is the suffixes com, net, and cn.

The second-level domain name is the domain name that is hosted under the main domain name, and the number of levels of domain name is to see how many are behind the domain name"."A delimited suffix. It is a domain name one level to the left of the naked domain name. Generally speaking, a second-level domain name is a format like 3 Ws (www).

For example: "www fuyeor com" has two or more options"."The delimited suffix is a second-level domain name.

Because the IP address is a boring long list of numbers, in order to make it easy for people to remember, there is a domain name, such as: "second-level domain name." fuyeor.root domain name" or simply "fuyeor" without a second-level domainroot domain".

Among them, "withered first-level domain name." fuyeor."Root domain digs" is the subject of the domain name; The root domain name is the suffixes com, net, and cn.

1. Second-level domain (SLD) has different meanings under the name of the international top-level domain or the ccTLD.

2. The second-level domain name under the international top-level domain name, the second-level domain name generally refers to the online name chosen by the domain name registrant, such as "yahoo com"; Business organizations that access the Internet often use their own trademarks, trade names, or other business marks as their names on the Internet, such as "Microsoft Com."

3. Second-level domain names under ccTLDs, which generally refer to signs similar to international top-level domains that indicate the category and function of the registrant. For example, in the "com cn" domain name structure, ".com "At this time, it is placed in the ccTLD".

cn", which indicates a commercial organization, and so on.

1. Under the ccTLD, the second-level domain name generally refers to the logo similar to the international top-level domain name that indicates the category and function of the Yuhui registrant. Second-level domains (SLDs) have different meanings under international top-level domains or ccTLDs. The second-level domain name under the international top-level domain name is generally the online name chosen by the domain name registrant, such as "yahoo com"; Business organizations that access the Internet often use their own trademarks, trade names, or other business marks as their online names, such as "Microsoft Com."

2. The second-level domain name under the ccTLD generally refers to the sign that represents the registrant's category and function similar to the international top-level domain name. For example, in the "com cn" domain name structure, ".com "is now placed in the ccTLD".

cn", which indicates a commercial organization, and so on.

How to set the second-level domain name: 1. Log in to Wanwang, find "My Domain Name", click on it, and there is a resolution behind the domain name. Turn on and stare at it.

2. Click "Add Resolution" to officially start adding the second-level domain name. 3. If the second-level domain name points to a resolution server, select CNAME as the record type. If it is a **, select implicit URL or explicit URL, the difference is that the address in the address bar changes or does not change after the transfer.

If you do not want to display the actual address, it is recommended to use implicit. Here, since I'm pointing to a resolution server, I'm using the cname record. 4. The host record is your second-level domain name.

For example, if you want to set the second-level domain name to ", then fill in the host record"sy\"。5. The record value refers to the address to be turned, that is, the actual address. 6. After the stool is set up, if it is transferred to a **, then it is over.

After a few minutes, the second-level domain name of Noisy Travel was in effect. If you're going to a resolution server, there's one last step. 7. Build a link to the second-level domain name on the other party's resolution server.

At this point, the second-level domain name is set up.

A second-level domain name is a domain name that adds another level to the primary domain name, for example.

"baidu" is a second-level domain name. The role of second-level domain names is mainly to distinguish between different ** or departments.

Why do you need a second-level domain name?

1. Easy to identify and remember.

Because second-level domains can distinguish between different ** or departments, users can find what they are looking for more quickly and accurately when they visit. At the same time, the use of second-level domain names makes it easier for users to remember the address they are visiting, compared to using IP addresses to access.

2. Optimize SEO

Through the rational use of second-level domain names, you can improve the SEO optimization effect of **. For example, you can place different content or services under different second-level domains, so that search engines can better identify them and include them more efficiently.

3. Better management and marketing.

The setting of second-level domain names allows different departments or teams to better manage content. At the same time, you can use different second-level domain names to showcase different products or services of your company or brand, so as to better promote your own business and sell potatoes.

How to set up a second-level domain name.

When setting up a second-level domain name, you need to apply for a domain name first, such as ", and then add a subdomain "***" under the main domain name, and it is done.

Then, configure the resolution rules in the DNS server. The DNS server translates the second-level domain name into an IP address, enabling the browser to be accessed by normal grandchildren**. In this way, after setting the second-level domain name, you can associate the content with different second-level domain names to improve the user experience.

Epilogue. Second-level domain names are an integral part of design and management, and the use of second-level domain names can improve usability and SEO optimization. However, when setting up second-level domain names, you need to pay attention to maintaining a certain degree of standardization and avoid over-use, so as not to affect the user experience.

The second-level domain name is the domain name that is hosted under the main domain name, and the number of levels of domain name is to see how many are behind the domain name"."A delimited suffix. It is a domain name one level to the left of the naked domain name. Generally speaking, a second-level domain name is a format like 3 Ws (www).

For example: "www fuyeor com" has two or more options"."The delimited suffix is a second-level domain name.

Because IP addresses are boring, long strings of numbers, to make them easy to remember, there are domain names, such as: "second-level domain names." fuyeor.root domain name" or simply "fuyeor" without a second-level domainroot domain".

where, "second-level domain name." fuyeor.The root domain name "fuyeor is the body of the domain name; The root domain name is the suffixes com, net, and cn.