A method, apparatus and system of exposure of public internet protocol addresses in an advertising exchange server to improve relevancy of advertisements are disclosed. In one embodiment, a method of a client device includes applying an automatic content recognition algorithm to determine a content identifier of an audio-visual data. The client device then associates the content identifier with an advertisement data based on a semantic correlation between a meta-data of the advertisement provided by a content provider and/or the content identifier. The advertisement data may be generated through an advertising exchange server based on the content identifier of the audio-visual data and/or a public internet-protocol address associated with an application requesting the advertisement data. A provider of the content identifier may receive a compensation when the advertisement data is associated with the audio-visual data based on the public internet protocol address associated with the application requesting the advertisement data.