An apparatus, method and computer program product are provided for generating map data of categorized links. The method may include receiving a request for at least one categorized link in a map area and obtaining at least one categorized link in the map area, based on the request. The method may further include determining link identifiers corresponding to each link of the at least one categorized link, and generating at least one bloom filter, wherein the at least one bloom filter encodes link identifiers corresponding to each link of the at least one categorized link.