6621ZT is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469689668,"geom:latitude":51.848568,"wof:name":"6621ZT","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633337,"localadmin_id":404474305,"locality_id":101808669,"postalcode_id":891157459,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":5.434658,"wof:id":891157459,"geom:type":"Polygon","wof:lastmodified":1469689668,"clustr:alpha":0.05,"wof:belongsto":[85687043,102191581,404474305,85633337,101808669],"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":"5.43335294724,51.8480644226,5.43597555161,51.84923172","clustr:count":10,"clustr:area":132.04,"clustr:density":0.08,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"f00a2bc827f0b2f552858baebe755d22","wof:parent_id":101808669,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":0.33,"edtf:cessation":"uuuu"}