How to parse dns domain names? The process of briefly describing the network access to the dns domain is dependent on the dns resolution system, which is divided into multiple links and is broken down by one layer, thus matching the domain name to the ip address. Here's a small part of the rice network that shows how to interpret the dns domain and briefly describe the dns domain。
How to parse dns domain names? A brief description of the dns domain description process (recommended reading: what does whois do? How about a domain search
Dns domain name resolution process
The dns service module of the local device initiates the query request and then goes to the network operator dns (local dns). If the operator's dns cache contains a cache record previously checked by other users, the ip address of the domain name requested by the local device can be returned immediately。
Often, however, there is no record of current requests for access to domain names in the operator's dns cache due to individual preferences and habits. At this point, the operator dns server sends one layer of queries to the superior dns server, with a different division of responsibilities at each level。
13 world top dns servers (root servers): store all suffixed domain name server ip addresses and query the corresponding domain name server ip based on domain name suffix。
Domain name servers: store registration information and ns server addresses for all domain names. Based on the ns address recorded on domain name registration information, locates the dns resolution server (authority dns) that provides domain name resolution services。
Authority dns: stores all domain-name parsing records that provide a parsing service. You can directly query the parsing log values added to the access domain name。
Operator dns: a search request is made to the superior dns analyser based on a user's request for interpretation access, and the requested device is informed of the final search of the domain name resolution record, pointing to that address。
In theory, every time a computer browser or an application is used, a domain name resolution query is requested from the dns, i. E. A query response through the entire dns resolution system above. Based on the final results, you can access web content or game data, video pictures, beautiful music, etc. From the target server。
Operator dns, as an intermediary for direct access to the equipment, receives requests for the analysis of domain names on a daily basis. Usually, multiple individuals in a row initiate a request for the resolution of the same domain name。
If you follow the dns resolution system each time and get the final resolution through all dns servers, it will take a long time and it will not make sense. In order to reduce this operation, dns operators store the domain name results obtained from a superior query to the dns server so that they can be called to respond to the same domain name resolution query request next time。
For additional domain name knowledge needs, please pay attention to the rice domain registration: http://www. Choumi. Com/regym. Htm
