28512 is a postalcode and its consensus geometry is derived from uszcta.
{"mz:is_ceased":0,"geom:latitude":34.706323,"wof:name":"28512","counts:names_total":0,"wof:placetype":"postalcode","mz:is_current":1,"wof:hierarchy":[{"continent_id":102191575,"country_id":85633793,"county_id":102080875,"postalcode_id":554781027,"region_id":85688773}],"mz:is_deprecated":0,"lbl:latitude":34.712151,"mz:postal_locality_alt":["Pine Knoll Shrs"],"geom:area":0.004628,"geom:longitude":-76.786626,"wof:id":554781027,"counts:concordances_total":1,"geom:type":"Polygon","wof:lastmodified":1611184829,"wof:belongsto":[102191575,85633793,102080875,85688773],"wof:concordances":{"gp:id":"12769698"},"wof:repo":"whosonfirst-data-postalcode-us","src:geom":"uszcta","wof:country":"US","counts:names_preferred":0,"gp:parent_id":"12589389","geom:area_square_m":4.7043418526743E7,"wof:tags":[],"counts:names_variant":0,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"US","counts:names_languages":0,"geom:bbox":"-76.879766,34.688369,-76.669808,34.723829","wof:superseded_by":[],"wof:supersedes":[],"lbl:longitude":-76.793416,"wof:geomhash":"c11581677bd528a14888f4e5b5fd83da","wof:parent_id":102080875,"wof:placetype_names":["postalcode"],"mz:hierarchy_label":1,"wof:placetype_id":470996387,"edtf:cessation":"uuuu","mz:postal_locality":"Atlantic Beach"}