42390 is a postalcode and its consensus geometry is derived from frgov.
{"mz:is_ceased":0,"geom:latitude":45.468792,"wof:name":"42390","counts:names_total":0,"wof:placetype":"postalcode","frgov:DEP":"42","frgov:ID":"42390","frgov:_COL6":3372.67,"mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633147,"county_id":102068273,"empire_id":136253037,"locality_id":101750843,"macrocounty_id":404228089,"macroregion_id":1108826389,"postalcode_id":421301985,"region_id":85683377}],"mz:is_deprecated":0,"frgov:SURF":5.327824,"geom:area":6.14E-4,"geom:longitude":4.352034,"wof:id":421301985,"frgov:LIB":"Villars","counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1496506757,"wof:belongsto":[85683377,102191581,85633147,404228089,1108826389,101750843,136253037,102068273],"wof:concordances":{"gp:id":"12724965"},"wof:repo":"whosonfirst-data-postalcode-fr","src:geom":"frgov","wof:country":"FR","counts:names_preferred":0,"frgov:POP2010":7831,"gp:parent_id":"12672420","geom:area_square_m":5328280.112613,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"FR","counts:names_languages":0,"geom:bbox":"4.33359864499,45.4529171661,4.37010605793,45.4815661408","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"9c9859de94f6488d122c3a25d4b042e3","wof:parent_id":101750843,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}