A method for distributing data includes selecting for transmission to a client a plurality of data items from a data set. The selected data items are encapsulated in multiple CNAME-type resource records, each such resource record containing an artificial domain name including one or more of the data items. The resource records are arranged in a linked list, in which the artificial domain name contained in at least one of the resource records serves as a key for another of the resource records. The linked list of the resource records is uploaded to a Domain Name System (DNS) server for delivery to the client in response to a single DNS request submitted by the client.