9218RT is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469698075,"geom:latitude":53.132167,"wof:name":"9218RT","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633337,"localadmin_id":404473791,"locality_id":101807429,"postalcode_id":907077347,"region_id":85687055}],"mz:is_deprecated":0,"geom:area":3.0E-6,"geom:longitude":6.053758,"wof:id":907077347,"geom:type":"Polygon","wof:lastmodified":1469698075,"clustr:alpha":0.05,"wof:belongsto":[85687055,102191581,404473791,85633337,101807429],"mz:is_clustr":1,"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"6.05230140686,53.1315116882,6.05530357361,53.1329956055","clustr:count":33,"clustr:area":276.88,"clustr:density":0.12,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"527e54a79b3c9c1b9a0a72a17c1c7ecf","wof:parent_id":101807429,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":0.49,"edtf:cessation":"uuuu"}