6603AC is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469689591,"geom:latitude":51.803579,"wof:name":"6603AC","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":101754761,"postalcode_id":891155843,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":1.5E-5,"geom:longitude":5.745761,"wof:id":891155843,"geom:type":"Polygon","wof:lastmodified":1513366115,"clustr:alpha":0.05,"wof:belongsto":[85687043,102191581,404473953,85633337,101754761],"mz:is_clustr":1,"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"geom:area_square_m":116291.932068,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"5.73907661438,51.801864624,5.75410270691,51.8054962158","clustr:count":19,"clustr:area":9.55,"clustr:density":1.99,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"ef1f19ed03250f60b03944c67844efe0","wof:parent_id":101754761,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":2.24,"edtf:cessation":"uuuu"}