Abstract: The present disclosure provides an DNS server and configuration loading method, an DNS network system, and a domain name resolution method and system. The present disclosure relates to the field of network communication technologies. The DNS server configuration loading method includes: dividing at least two NS partitions according to network carriers and/or regions; based on an IP address of an DNS server, obtaining an NS partition on which the DNS server has a traffic; from local records or database, filtering out domain name configuration information belonging to the NS partition corresponding to the DNS server; and loading the filtered-out domain name configuration information into a memory of the DNS server. The present disclosure significantly reduces the amount of DNS configuration; increases the efficiency for the DNS server to load the domain name configuration information; reduces the loading time; and reduces the memory resource consumption of the DNS server.

Abstract: A domain name resolution system, a domain name resolution server, and a domain name resolution method are provided. The domain name resolution method comprises following steps: configuring a same extensive domain name for portal domain names using a same server group; resolving a domain name requested by the client to a portal domain name via a CNAME; performing resolving on the portal domain name, and using a resolution result as the resolution result of the domain name requested by the client to be sent back to the client.