RDI Codes

For U.S. addresses only, Residential Delivery Indicator (RDI™) processing can help you determine the best cost for shipping your packages. RDI™ processing identifies whether an address is a business or a residential address. This difference is important because some delivery services charge a higher price for delivery to a residential address than they do to a business address.

When you validate an address, the address is assigned an RDI code in the RDI field. The RDI codes are:

B

The address is a business address.

R

The address is a residential address.

M

The address is both a residential and a business address.

null

Not checked because the address did not code at a ZIP + 4^® level, or RDI™ was not performed.