Abstract: A system for providing a co-location service comprises a plurality of switching hubs for changing public IP address into private IP address, a plurality of giga lines for connecting the switching hubs, a L4 switch for performing the server load balancing, a customer server connected to the L4 switch by means of the private IP networks and a GLB server for finding a shortest path for a client computer.

Abstract: The present invention relates to a method for resolution services of special domain names on behalf of general DNS providers, global load balance (GLB) and server load balance (SLB) service providers in application of the DNS, and Extended domain name service (x-DNS) providers who provide services of resolving specific keywords such as home language domain names and the like into IP addresses.

Abstract: The present invention relates to a service method for a construction of networks having automatic backup and load-balancing upon failures to networks and systems, and more particularly to a dedicated private network service method having a load-balancing function wherein the network backup is available since a bypass path is made to normally operating IDC centers upon failures to a specific IDC of the IDCs dispersed in plural places in a public IP networks by GLB servers, and load-balancing as to entire servers is available by constructing network equipment changeable into a private IP network in case of connecting to the IDC centers, connecting the network equipment by Giga lines, and using dispersed IDCs as a network constructed in one place.