8091 is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"geom:latitude":52.462975,"wof:name":"8091","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":404473927,"locality_id":101837823,"postalcode_id":538956871,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":0.001676,"geom:longitude":5.984891,"wof:id":538956871,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1513367592,"clustr:alpha":1,"wof:belongsto":[85687043,102191581,404473927,85633337,101837823],"mz:is_clustr":1,"wof:concordances":{"gp:id":"12853065"},"wof:repo":"whosonfirst-data-postalcode-nl","src:geom":"oa","wof:country":"NL","counts:names_preferred":0,"geom:area_square_m":1.2627105978815E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"NL","counts:names_languages":0,"geom:bbox":"5.9480714798,52.4437141418,6.01523256302,52.4803962708","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"b786d96be5250bdbb6463925bb310d3d","wof:parent_id":101837823,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}