There are various reasons an address can be deemed “undeliverable.”
Here is a list of detailed definitions for various fields in the US verification object.
ZIP Code Types - components[zip_code_type]
|
standard |
The default ZIP code type. Used when none of the other types apply. |
|
po_box |
The ZIP code contains only PO Boxes. |
|
unique |
The ZIP code is uniquely assigned to a single organization (such as a government agency) that receives a large volume of mail. |
|
military |
The ZIP code contains military addresses. |
|
empty string |
A match could not be made with the provided inputs. |
Record Types - components[record_type]
|
street |
The default address type. |
|
highrise |
The address is a commercial building, apartment complex, highrise, etc. |
|
firm |
The address is of an organizational entity which receives a minimum number of mailpieces per day. |
|
po_box |
The address is a PO Box. |
|
rural_route |
The address exists on a Rural Route. This is an older system of mail delivery which is still used in some parts of the country. |
|
general_delivery |
The address is part of the USPS General Delivery service, which allows individuals without permanent addresses to receive mail. |
|
empty string |
A match could not be made with the provided inputs. |
Carrier Route Types - components[carrier_route_type]
|
city_delivery |
The default carrier route type. Used when none of the other types apply. |
|
rural_route |
The carrier route is a Rural Route. This is an older system of mail delivery which is still used in some parts of the country. |
|
highway_contract |
The carrier route is a Highway Contract Route. This is an older system of mail delivery which is still used in some parts of the country. |
|
po_box |
The carrier route consists of PO Boxes. |
|
general_delivery |
The carrier route is part of the USPS General Delivery service, which allows individuals without permanent addresses to receive mail. |
|
empty string |
A match could not be made with the provided inputs. |
DPV Footnotes - deliverability_analysis[dpv_footnotes]
|
AA |
Some parts of the address (such as the street and ZIP code) are valid. |
|
A1 |
The address is invalid based on given inputs. |
|
BB |
The address is deliverable. |
|
CC |
The address is deliverable by removing the provided secondary unit designator. |
|
N1 |
The address is deliverable but is missing a secondary information (apartment, unit, etc). |
|
F1 |
The address is a deliverable military address. |
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G1 |
The address is a deliverable General Delivery address. General Delivery is a USPS service which allows individuals without permanent addresses to receive mail. |
|
U1 |
The address is a deliverable unique address. A unique ZIP code is assigned to a single organization (such as a government agency) that receives a large volume of mail. |
|
M1 |
The primary number is missing. |
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M3 |
The primary number is invalid. |
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P1 |
PO Box, Rural Route, or Highway Contract box number is missing. |
|
P3 |
PO Box, Rural Route, or Highway Contract box number is invalid. |
|
R1 |
The address matched to a CMRA and private mailbox information is not present. |
|
R7 |
The address matched to a Phantom Carrier Route (carrier_route of R777), which corresponds to physical addresses that are not eligible for delivery. |
|
RR |
The address matched to a CMRA and private mailbox information is present. |