US8868760B2
patent
A domain name server includes a processor operable to receive a domain name system request, determine a source Internet protocol address of the request, and in response to determining the source Internet protocol address to send a prompt to a client system associated with the Source Internet protocol address and receive a reply from the client system. In response to receiving the reply the processor selects a content server that is closer to the source Internet protocol address than another content server. In response to selecting the con tent server the processor composes a file including a list of domain names that are associated with the content delivery network and an Internet protocol address associated with the content server. The processor sends the file to the client sys tem.
18 claims. 47,268 characters of text.