Shulou(Shulou.com)06/02 Report--

What are the parts of a domain name? Many novices are not very clear about this. In order to help you solve this problem, the following small series will explain it in detail for everyone. Those who have this need can learn from it. I hope you can gain something.

A complete domain name is composed of computer name + network name + organization type name + top-level domain name. DNS, closely related to domain names, refers to the Domain Name System.

On the Internet, domain names and IP addresses are one-to-one correspondence, although domain names are convenient for people to remember, but only IP addresses can be recognized by each other between machines. The conversion between them is called domain name resolution. Domain name resolution needs to be completed by a special domain name resolution system. DNS is a system for domain name resolution.

Take a common domain name as an example to illustrate the components of a domain name

Baidu's website www.baidu.com, label "baidu" is the main domain name, the last label ".com" is the suffix of the domain name, representing this is a com international top-level domain. The www. in front is the network name, the domain name of www.

DNS stipulates that the labels in domain names are composed of English letters and numbers, each label does not exceed 63 characters, and does not distinguish case letters. No punctuation except hyphen (-) can be used in labels. The lowest level domain name is written on the far left, while the highest level domain name is written on the far right. A complete domain name consisting of multiple labels does not exceed a total of 255 characters.

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