6678BW is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469689922,"geom:latitude":51.878627,"wof:name":"6678BW","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":404474651,"locality_id":101808731,"postalcode_id":891163657,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":5.824299,"wof:id":891163657,"geom:type":"Polygon","wof:lastmodified":1513366921,"clustr:alpha":0.05,"wof:belongsto":[85687043,102191581,404474651,85633337,101808731],"mz:is_clustr":1,"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"geom:area_square_m":2704.075887,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"5.82375097275,51.8782997131,5.82472467422,51.8789978027","clustr:count":18,"clustr:area":4.97,"clustr:density":3.62,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"f0bd41c81cbd5f44c5b2bd270616e547","wof:parent_id":101808731,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":0.21,"edtf:cessation":"uuuu"}