6851KM is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469690583,"geom:latitude":51.931764,"wof:name":"6851KM","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":404474617,"locality_id":101754753,"postalcode_id":891179323,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":5.919927,"wof:id":891179323,"geom:type":"Polygon","wof:lastmodified":1513366067,"clustr:alpha":0.05,"wof:belongsto":[85687043,102191581,404474617,85633337,101754753],"mz:is_clustr":1,"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"geom:area_square_m":2836.611098,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"5.91919851303,51.9312591553,5.92035293579,51.9322891235","clustr:count":5,"clustr:area":12.22,"clustr:density":0.41,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"0a1a6f9f25d863e874b64bdebeb5545b","wof:parent_id":101754753,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":0.23,"edtf:cessation":"uuuu"}