A method of selecting an edge proxy server to serve web contents to user devices is disclosed. Domain name system (DNS) queries from a domain name resolver are received. A mapping between the domain name resolver and a corresponding list of user devices served by the domain name resolver are created based on the received DNS queries. A transformed geographical location representing the domain name resolver is determined based on the mapping. An edge proxy server is selected in response to a future DNS query received from the domain name resolver based at least in part on the transformed geographical location of the domain name resolver.