In one aspect, an example method includes (i) determining a first binary number assigned to a content-presentation device, with digits of the first binary number corresponding to respective segments of content-presentation devices; (ii) determining a second binary number assigned to an advertising campaign, with digits of the second binary number corresponding to the respective segments of content-presentative devices; (iii) comparing the first binary number and the second binary number; (iv) based on a result of the comparing, determining that the advertising campaign is valid for the content-presentation device; and (v) based on the determining that the advertising campaign is valid, causing supplemental content associated with the advertising campaign to be transmitted to the content-presentation device.