A CCA data-service fleet member. Mirror + identifier graph + relationship graph over USPS postal facilities and the ZIP universe they serve. Enter a PO Box, get the physical address of the post office behind it.
Resolve a PO-Box ZIP to the physical post office that hosts it.
Postal facilities near any address, ZIP, or place — on the map.
Search post offices by name, finance number, NASS code, or ZIP.
GET /api/v1/pobox?address=PO+Box+1234,+Bellevue,+WA+98009
GET /api/v1/zip/98004
GET /api/v1/facilities/{mci|finance|nass|zip}
GET /api/v1/area?q=Bellevue,+WA
GET /api/v1/search?q=...
Geography, boundaries & geocoding are reused from the fleet
(cca-geocode, cca-community) — never duplicated here.