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Anonymous users2024-02-06The so-called domain name is a fixed name, and there is an application that many offer free second-level domains, and we can apply for them and then use a short second-level domain name to point to a complex or our free space, which is also a very common application.
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Anonymous users2024-02-05IP addresses are represented by binary numbers, each 32 bits long, consisting of four digits less than 256, separated by dots, e.g. to represent an IP address. Since the IP address is a numeric identifier, it is difficult to remember and write when used, so a symbolic address scheme is developed on the basis of the IP address to replace the numeric IP address. Each symbolized address corresponds to a specific IP address, making it much easier to access resources on the network.
This character-based address, which corresponds to a numeric IP address on the network, is called a domain name.
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Anonymous users2024-02-04A domain name is the name of a computer or group of computers on the Internet, consisting of a string of names separated by dots, which is used to locate the computer (sometimes referred to as it) during data transmissionGeographical locationDespite the IP address.
It can uniquely mark computers on the network, but IP addresses are long numbers that are not intuitive, and user memory is very inconvenient, so people have invented another set of character-based address schemes, the so-called domain name addresses.
The IP address and the domain name are one-to-one, and the information about the domain name address is stored in a domain name server.
dns, domain name server), the corresponding translation is left to the name server. A name server is a server that provides a translation service between IP addresses and domain names.
Domain name servers.
Nameservers manage names by dividing groups into groups responsible for the names of each subsystem. Each layer in the system is called a domain, and each domain is separated by a point.
The so-called domain name server (i.e., domain name server, DNS) is actually a domain name system.
of the host. It is a hierarchical database that is capable of performing domain name resolution.
name resolution）。
DNS allows a name server to "delegate" a portion of its name services to subservers, thus implementing a hierarchical namespace.
In addition, DNS provides some additional information, such as system aliases, contact information, and which host is acting as a mail hub for a system group or domain.
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Anonymous users2024-02-03A domain name is the name of a computer or group of computers on the Internet that is resolved by DNS to an IP address and then accessed using an IP address as a string of dot-separated names. For example, "fuyeor com" is a domain name where com is the top-level domain, or the root domain or domain extension.
It's easier for us to remember domain names (e.g. fuyeor com), but machines only know IP addresses, and as long as this IP address corresponds to the relevant domain name, this is called domain name resolution. Domain name resolution needs to be done by a dedicated domain name resolution server, and the whole process is automated. Domain Name Resolution Protocol (DNS) is used to map easy-to-remember host domain names and email addresses to IP addresses that are easily recognizable to computers.
Example: www fuyeor com is a domain name that corresponds to an IP address. DNS is like an automatic directory where we can dial the name of the Fuyeor directly in place of the number (IP address).
When we call the ** name directly, DNS converts a human-friendly name (e.g., www fuyeor com) into a machine-friendly IP address (e.g., .
** is often a "second-level fuyeor root domain", or simply a "fuyeor root domain" format without a second-level domain. The number of levels of domain names is to see how many are behind the domain name"."A delimited suffix.
For example: "www fuyeor com" has two or more options"."The delimited suffix is a 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).
Among them, in "www fuyeor com", fuyeor is the main body of the domain name; The root domain name is the suffix com, net, and cn, and the second-level domain is "www".
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Anonymous users2024-02-02In layman's terms, a domain name is an address on the Internet.
What is a domain name? I'll help you look up whois information.
Domain name pollution, also known as DNS pollution, is the same as real environmental pollution, and there is also pollution in the network, which is the domain name pollution that makes the majority of netizens headaches, it is a method that allows ordinary users to not communicate with them due to obtaining a fake target host IP, and it is a DNS cache poisoning attack (DNS cache poisoning). The way it works is that because the usual DNS query does not have any authentication mechanism, and the DNS query is usually based on UDP is a connectionless and unreliable protocol, the DNS query is very easy to be tampered with, through the intrusion detection of the DNS query on UDP port 53, once the request that matches the keyword is found, it will immediately disguise itself as the name server (NS) of the target domain name to return false results to the queryer. >>>More
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