6691XM is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469689976,"geom:latitude":51.877017,"wof:name":"6691XM","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633337,"localadmin_id":404474617,"locality_id":101808689,"postalcode_id":891164939,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":0,"geom:longitude":5.968009,"wof:id":891164939,"geom:type":"Polygon","wof:lastmodified":1469689976,"clustr:alpha":0.05,"wof:belongsto":[85687043,102191581,404474617,85633337,101808689],"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":"5.96778917313,51.8765983582,5.96819543839,51.877368927","clustr:count":20,"clustr:area":4.97,"clustr:density":4.02,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"b77e7478b639d38efc0c45e52de6d23f","wof:parent_id":101808689,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":0.18,"edtf:cessation":"uuuu"}