A Domain Name Server (DNS) directs web communications to an intermediation platform. The DNS comprises data storage containing (i) host data that correlates each of a plurality of domain names with a respective host server network address and (ii) whitelist data that correlates at least a given domain name with an intermediation platform network address; a communication interface for receiving correlation requests and for transmitting correlation responses, wherein, when the DNS receives a correlation request that seeks a network address correlated with the given domain name, the DNS determines by reference to the whitelist data that the given domain name is correlated with the intermediation platform network address, and the DNS responsively returns a correlation response providing the intermediation platform network address as the network address correlated with the given domain name.