The root server is the core component of DNS, maintaining the authoritative database of top-level domain names and used to resolve domain names into IP addresses. The root server system consists of 13 servers distributed around the world, named with the letters A to M and operated by different organizations. It is managed by ICANN to ensure the stability of the Internet and prevent domain spoofing.
What is a root server?
Root servers are a core component of the Internet’s Domain Name System (DNS), maintaining an authoritative database of all top-level domain names (TLDs) such as .com, .net, and .org.
The role of the root server:
- Resolve domain names into IP addresses. When you enter a domain name into your browser, the root servers resolve the domain name's IP address, allowing your device to find and connect to the correct web server.
- Prevent domain name spoofing. Root servers ensure that domain names resolve only to their authorized IP addresses, preventing malicious actors from redirecting you to fake websites or stealing your personal information.
- Ensure the stability of the Internet. Root servers are critical in the day-to-day running of the Internet, and if they fail, it can cause widespread disruption of the Internet.
The structure of the root server:
There are 13 root servers in the world, named with the letters A to M. These servers are operated by different organizations to ensure redundancy and resiliency.
Management of Root Servers:
Root servers are managed by the Internet Corporation for Assigned Names and Numbers (ICANN). ICANN is responsible for maintaining technical standards for root servers and ensuring their security.
Other key points:
- Root servers do not store all domain name information. They only provide IP addresses for top-level domains.
- DNS is recursive, meaning that when your device cannot resolve a domain name directly from the root servers, it makes a request to an authorized DNS server.
- Root servers use secure encryption protocols to protect domain name information from attacks.
The above is the detailed content of What is a root server. For more information, please follow other related articles on the PHP Chinese website!
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