Italy

• Sources: Addresses come from ANNCSU, the national archive of house numbers and streets kept by ISTAT and the Agenzia delle Entrate (CC BY 4.0). Region, province and municipality codes and names come from ISTAT. ANNCSU has no postcodes, so postcodes are derived from OpenStreetMap and GeoNames.
• Update frequency: Monthly.
• Postcodes: five digits, the CAP (codice di avviamento postale), such as 00184 in central Rome; treat them as text because of the leading zero. Most municipalities have a single CAP, while large cities such as Rome, Milan and Naples have several. There, the postcode of an address is derived from nearby addresses and can differ from the one Poste Italiane uses.

House numbers

• streetNumber is text: the house number (civico). In Genoa and Florence, business premises have a separate red numbering, marked with an R, such as 12R.
• A suffix (esponente) such as A, BIS or 1 is the premise.

Address fields

• region: the regione, such as Lazio.
• province: the province or metropolitan city (città metropolitana).
• settlement: the locality (località), or the municipality's name where the source names none.
• lat and lng are null for an address without a known location.