17870 is a postalcode and its consensus geometry is derived from frgov.
{"mz:is_ceased":0,"geom:latitude":45.997585,"wof:name":"17870","counts:names_total":0,"wof:placetype":"postalcode","frgov:DEP":"17","frgov:ID":"17870","frgov:_COL6":786.414,"mz:is_approximate":1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633147,"county_id":102068193,"empire_id":136253037,"localadmin_id":404398135,"macrocounty_id":404227833,"macroregion_id":1108826385,"postalcode_id":421298533,"region_id":85683275}],"mz:is_deprecated":0,"frgov:SURF":35.225542,"geom:area":0.004101,"geom:longitude":-0.952373,"wof:id":421298533,"frgov:LIB":"Breuil-Magn","counts:concordances_total":1,"geom:type":"MultiPolygon","wof:lastmodified":1496506030,"wof:belongsto":[85683275,102191581,85633147,404398135,404227833,1108826385,136253037,102068193],"wof:concordances":{"gp:id":"12723436"},"wof:repo":"whosonfirst-data-postalcode-fr","src:geom":"frgov","wof:country":"FR","counts:names_preferred":0,"frgov:POP2010":1994,"gp:parent_id":"12597189","geom:area_square_m":3.5227999926941E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"FR","counts:names_languages":0,"geom:bbox":"-0.999402877377,45.9529401106,-0.905251194149,46.0301976722","wof:superseded_by":[],"wof:supersedes":[],"wof:geomhash":"d2ef25b4f72c50f8b14d32daa2793c0f","wof:parent_id":404398135,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu"}