A method of processing digital content service requests from one or more user devices, each digital content service request relating to digital content provided by a content provider and comprising at least one server location request and at least one content request associated therewith, the at least one server location request comprising an indication of a network name associated with the content provider from which digital content is desired by a user of a user device, and the at least one content request comprising: - an indication of a digital content item desired by the user of the user device; and - a content server routing identifier indicating a network location of the content server deemed to be capable of serving content requests for digital content provided by the content provider with which the network name indicated in the associated at least one server location request is associated; the method comprising: receiving the at least one server location request from the user device in respect of the digital content item desired by the user of the user device from which the at least one server location request is received; determining whether to serve or deny the received at least one server location request in dependence on whether the network name indicated by the received at least one server location request is designated as being of a first or a second type, and provided that the indicated network name is not designated as being of the second type, serving the received at least one server location request by providing as a response to the received at least one server location request the indication of the content server routing identifier indicating the network location of the content server deemed to be capable of serving the at least one content request in respect of the digital content item desired by the user of the user device; subsequently receiving from the user device the at least one content request associated with the at least one server location request in respect of the desired digital content item; determining whether the indicated content server routing identifier of the at least one content request is designated as being of the first or the second type; allowing the at least one content request if the indicated content server routing identifier is not designated as being of the second type; allowing the at least one content request if the indicated content server routing identifier is designated as being of the second type if it has been determined that the content server routing identifier is on a stored exception list of content server routing identifiers indicating that the network name indicated in the received at least one server location request was designated as being of the first type; and otherwise denying the at last one content request. - an indication of a digital content item desired by the user of the user device; and - a content server routing identifier indicating a network location of the content server deemed to be capable of serving content requests for digital content provided by the content provider with which the network name indicated in the associated at least one server location request is associated; receiving the at least one server location request from the user device in respect of the digital content item desired by the user of the user device from which the at least one server location request is received; determining whether to serve or deny the received at least one server location request in dependence on whether the network name indicated by the received at least one server location request is designated as being of a first or a second type, and provided that the indicated network name is not designated as being of the second type, serving the received at least one server location request by providing as a response to the received at least one server location request the indication of the content server routing identifier indicating the network location of the content server deemed to be capable of serving the at least one content request in respect of the digital content item desired by the user of the user device; subsequently receiving from the user device the at least one content request associated with the at least one server location request in respect of the desired digital content item; determining whether the indicated content server routing identifier of the at least one content request is designated as being of the first or the second type; allowing the at least one content request if the indicated content server routing identifier is not designated as being of the second type; allowing the at least one content request if the indicated content server routing identifier is designated as being of the second type if it has been determined that the content server routing identifier is on a stored exception list of content server routing identifiers indicating that the network name indicated in the received at least one server location request was designated as being of the first type; and otherwise denying the at last one content request.