39100 is a postalcode and its consensus geometry is derived from frgov.
{"mz:is_ceased":0,"geom:latitude":47.081773,"wof:name":"39100","counts:names_total":0,"wof:placetype":"postalcode","frgov:DEP":"39","frgov:ID":"39100","frgov:_COL6":16349.574,"mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633147,"county_id":102072041,"empire_id":136253037,"locality_id":101829251,"macrocounty_id":404227671,"macroregion_id":1108826395,"postalcode_id":421301647,"region_id":85683173}],"mz:is_deprecated":0,"frgov:SURF":122.843928,"geom:area":0.01459,"geom:longitude":5.47634,"wof:id":421301647,"frgov:LIB":"Dole","counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1496507492,"wof:belongsto":[85683173,102191581,85633147,404227671,1108826395,101829251,136253037,102072041],"wof:concordances":{"gp:id":"12724816"},"wof:repo":"whosonfirst-data-postalcode-fr","src:geom":"frgov","wof:country":"FR","counts:names_preferred":0,"frgov:POP2010":35787,"gp:parent_id":"12597120","geom:area_square_m":1.22852740846765E8,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"FR","counts:names_languages":0,"geom:bbox":"5.37762768885,47.0072690612,5.55064167976,47.1534419059","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"5c114bc694b08b5789641b67d25ddc1a","wof:parent_id":101829251,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}