6645BC is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469689745,"geom:latitude":51.87755,"wof:name":"6645BC","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":404473875,"locality_id":101809853,"postalcode_id":891159025,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":1.6E-5,"geom:longitude":5.702056,"wof:id":891159025,"geom:type":"Polygon","wof:lastmodified":1513366949,"clustr:alpha":0.05,"wof:belongsto":[85687043,102191581,404473875,85633337,101809853],"mz:is_clustr":1,"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"geom:area_square_m":124350.946912,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"5.69641876221,51.8726959229,5.70746803284,51.8822059631","clustr:count":89,"clustr:area":5.68,"clustr:density":15.68,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"15037cf0382ea2db9e25a70185f963d6","wof:parent_id":101809853,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":2.65,"edtf:cessation":"uuuu"}