Method and system for routing EPP requests over a network are provided. A routing system includes multiple frontend service interfaces, one or more gateways, a management server, and a backend service platform that provides multiple application services. The frontend service interfaces are addressable using virtual IP addresses (“VIP”) and can be provided by the gateways. The routing system defines a many-to-many mapping between the frontend service interfaces and a set of services provided by the backend service platform. A requestor can send a request over EPP to a targeted service interface to access one or more backend services, by sending the request to a target IP or domain name that corresponds to a VIP associated with the targeted service interface. Using the many-to-many mapping and the VIP of the targeted service interface, the routing system can identify backend services sought by the request and provide the requestor with access to the backend services.