There is no official or widely recognized postal code currently assigned to a specific city or region globally.
If you are looking for a location in a 6-digit system, you may be referring to one of these: 155309 cГіdigo postal
: In Colombia, "155309" appears in commercial bulletins (Boletín de Noticia Mercantil) as a registration number for businesses, such as "Helix" in the Cámara de Comercio de Oriente Antioqueño or "Raigambre Delicias de Antaño" in Sogamoso . There is no official or widely recognized postal