According to http://download.geonames.org/export/dump/featureCodes_en.txt PPL3 and PPL4 should be replaced by respectively PPLA3 and PPLA4.
According to http://download.geonames.org/export/dump/featureCodes_en.txt PPL3 and PPL4 should be replaced by respectively PPLA3 and PPLA4.

RailwayMan/itag,RailwayMan/itag