A domain name resolution method, device and system

Abstract

The invention relates to the field of domain name resolution, and particularly relates to a method, a device and a system for domain name resolution. A domain name resolution optimization device determines a to-be-optimized domain name list; according to a domain name in the domain name list, N times of first recursive request are initiated to an authorized DNS (domain name system), and response results are screened to obtain a corresponding resolution result for the domain name; a second recursive request initiated by a local DNS is received, the resolution result corresponding to the matched domain name is sent to the local DNS, through carrying out continuous multi-times recursion on the same DNS domain name, IP address information with as many domain names as possible is acquired, the multi-IP address information is screened according to an optimization strategy, an IP address which most meets the condition is selected, the IP address is returned to the local DNS, the local DNS forwards the IP address to the requested terminal user, and thus, the optimal resolution result is given to the terminal user.

Description

technical field [0001] The present invention relates to the field of domain name resolution, in particular to a domain name resolution method, device and system. Background technique [0002] DNS (Domain Name System, Domain Name System), as an integral part of Internet services, provides a mapping relationship between domain names and IPs. The DNS system is a distributed system, which is set up at the operator's end and configured at the broadband user's end. The DNS server that receives the broadband user's domain name request is called a local DNS; it is set up by an ICP (Internet Content Provider, Internet Content Service Provider), or The DNS server set up by an organization that provides domain name resolution services to realize the corresponding configuration relationship between domain names and IPs is called authorized DNS. [0003] At present, the widely used scheme with optimized DNS resolution results is SORTLIST (category list) sorting, and the flow process of ...

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Problems solved by technology

[0013] However, the problem with using the SORTLIST sorting scheme to resolve the domain name requested by the end user is that it can only resolve the results in one recursive response packet, but cannot resolve the results in multiple recursive response packets, which will lead to existing It is very likely that the domain name resolution system’s response to the end user is not the best resolution result

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