What is a domain name? Which service provider is better for domain name registration?

How do I apply for a simple and memorable domain name? What are the methods for applying for a domain name? Many people have these questions, and the following will explain them in detail.

Domain names were originally designed for ease of memorization. On the Internet, we use IP addresses as identifiers. Without a domain name, to access a website, you first need to know the IP address of the server hosting the website, and then use that IP address to access the website.

Obviously, purely numeric IPv4 addresses are difficult to remember, and the alphanumeric IPv6 addresses are even more difficult.

Using a domain name, like the commonly used www.xxx.com, is much easier to remember. The DNS server can then resolve the domain name to the server IP address. I've covered this in a previous article, so check it out if you're interested.

Domain names typically consist of letters, numbers, and symbols (only "." and "-" are allowed). Of course, some domain names also contain Chinese characters or other characters.

Domain names are divided into first-level domain names, second-level domain names, and third-level domain names, which are generally distinguished by the "." symbol in the domain name. For example, baidu.com is a first-level domain name, and news.baidu.com is a second-level domain name. Basically, the number of "." in the domain name indicates the level of the domain name. In Baidu's domain name, baidu is the main body of the domain name, com is the suffix of the domain name, and other xxx. added in front of baidu.com can be considered as Baidu's subdomains.