A method and a device for acquiring an identifier of a data server able to deliver content to a terminal. The method is executed by the terminal, which transmits, to a resolution server of a communication architecture, a message requesting to obtain an identifier of the data server in the second domain. This request message triggers reception, from the resolution server, of an information message includes the identifier of the data server in a first domain. This message furthermore includes a delegation chain, which includes a sequence of redirections from the second domain to the first domain.