6681AD is a postalcode and its consensus geometry is derived from oa.
{"mz:is_ceased":0,"wof:created":1469689923,"geom:latitude":51.894104,"wof:name":"6681AD","counts:names_total":0,"wof:placetype":"postalcode","mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633337,"localadmin_id":404474617,"locality_id":101837741,"postalcode_id":891163697,"region_id":85687043}],"mz:is_deprecated":0,"geom:area":1.0E-6,"geom:longitude":5.900394,"wof:id":891163697,"geom:type":"Polygon","wof:lastmodified":1469689923,"clustr:alpha":0.05,"wof:belongsto":[85687043,102191581,404474617,85633337,101837741],"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":"5.89965438843,51.8936386108,5.90151929855,51.894569397","clustr:count":11,"clustr:area":32.41,"clustr:density":0.34,"wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"63def710a670ecfad88cdcd2a38ca622","wof:parent_id":101837741,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"clustr:perimeter":0.32,"edtf:cessation":"uuuu"}