6603KK is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469689599,"geom:latitude":51.802063,"wof:name":"6603KK","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":-1,"mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633337,"localadmin_id":404473953,"locality_id":101754751,"postalcode_id":891156049,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":1.0E-6,"geom:longitude":5.784816,"wof:id":891156049,"geom:type":"Polygon","wof:lastmodified":1513366059,"clustr:alpha":0.05,"wof:belongsto":[85687043,102191581,404473953,85633337,101754751],"mz:is_clustr":1,"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"geom:area_square_m":10960.807444,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"5.78279161453,51.8014526367,5.78764820099,51.8031692505","clustr:count":4,"clustr:area":37.1,"clustr:density":0.11,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"e8c3674e4be25a43417713f119193d08","wof:parent_id":101754751,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":0.75,"edtf:cessation":"uuuu"}