The basics of domain names, nothing is more comprehensive than this
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In the Internet world, domain names are an important part of identifying and accessing websites. Understanding the basic rules, structure, suffixes, and length of domain names is essential for establishing and managing websites. This article will introduce these basic concepts of domain names to help readers better understand the domain name system.
1. Basic rules of domain names
A domain name is an address consisting of a series of characters that is used to identify a specific website or service on the Internet. Here are some basic domain name rules:
Domain names can contain letters (A-Z), numbers (0-9), and hyphens (-).
Domain names are case-insensitive, that is, example.com and Example.com are considered the same domain name.
Domain names are usually no longer than 63 characters (excluding the top-level domain suffix).
2. The structure of domain names
Domain names consist of multiple parts, arranged in a hierarchical structure. The highest level is the top-level domain (TLD), below which are the second-level domains (SLD) and lower-level subdomains (Subdomain).
For example, in "www.example.com":
"com" is the top-level domain.
"example" is a second-level domain name.
"www" is a subdomain name used to specify a specific host or service.
3. Domain name suffix
The domain name suffix is the last part of the domain name, which is used to indicate the category or region of the domain name. Common top-level domain name suffixes include:
Country Code Top-Level Domains (ccTLDs), such as ".cn" (China), ".us" (United States), etc.
Generic Top-Level Domains (gTLDs), such as ".com", ".org", ".net", etc.
In recent years, the Internet Engineering Task Force (IETF) has also introduced more top-level domain name suffixes, such as ".info", ".biz", ".name", etc.
4. Domain name length
The length of a domain name refers to its number of characters. Usually, the domain name length is limited to 63 characters, but this does not include the top-level domain name suffix. If your domain name exceeds this limit, it may cause some problems, such as not being able to work properly in some applications or services.
While 63 characters is the general standard, some top-level domain suffixes may have different restrictions. For example, some country code top-level domains may only allow domain names with a maximum of 2 characters.
Summary:
In summary, understanding the basic rules, structure, suffixes, and length of domain names is essential for selecting, registering, and managing domain names. When registering a domain name, please follow the prescribed naming rules and length restrictions, choose a suitable top-level domain suffix, and make sure the domain name is associated with your brand, business, or website theme.
Domaincn.com Committed to providing fair and transparent reports. This article aims to provide accurate and timely information, but should not be construed as financial or investment advice. Due to the rapidly changing market conditions, we recommend that you verify the information yourself and consult a professional before making any decisions based on this information.