CASS DPV & ZIP+4 Processing 3 — Questions and Answers
Question 1: How many additional digits does a ZIP+4 code append to the base 5-digit ZIP Code?
- 2
- 4 (Correct answer)
- 6
- 3
Correct answer: 4
A ZIP+4 code consists of the standard 5-digit ZIP Code plus a 4-digit add-on, separated by a hyphen, enabling more precise mail sorting.
Question 2: What is the role of the 'delivery point' code in the full USPS delivery point barcode system?
- It identifies the assigned carrier route number
- It provides a 2-digit code representing the specific mailbox, unit, or delivery stop (Correct answer)
- It verifies the spelling of the city name
- It encodes the postal zone and district for bulk sorting
Correct answer: It provides a 2-digit code representing the specific mailbox, unit, or delivery stop
The delivery point is a 2-digit code derived from the last two digits of the primary address number (or PO Box number), completing the 11-digit delivery point barcode.
Question 3: Which address components are primarily used to determine and assign a ZIP+4 code suffix?
- State abbreviation alone
- City name and state combined only
- Street name, primary number, and secondary number (Correct answer)
- ZIP Code and county FIPS code
Correct answer: Street name, primary number, and secondary number
The ZIP+4 suffix is derived by matching the street name, primary number (house number), and secondary number (unit) to USPS address range records within the base ZIP Code.
Question 4: What is the primary function of LACSLink in USPS address processing?
- Links apartment numbers to their carrier route codes
- Converts rural route and highway contract addresses to city-style street addresses (Correct answer)
- Validates email addresses associated with physical mailing addresses
- Assigns ZIP+4 codes to PO Box ranges
Correct answer: Converts rural route and highway contract addresses to city-style street addresses
LACSLink (Locatable Address Conversion System) translates old-style rural route addresses (e.g., RR 2 Box 5) into modern city-style addresses to improve deliverability and automation.
Question 5: In CASS processing terminology, what is a 'No-Stat' address?
- An address with no state abbreviation on record
- A valid address in the USPS database that is currently not receiving active mail delivery (Correct answer)
- An address that failed CASS statistical sampling thresholds
- An address not yet assigned a ZIP+4 code due to new construction
Correct answer: A valid address in the USPS database that is currently not receiving active mail delivery
A No-Stat address exists in USPS records and may be DPV-confirmed, but it is flagged as not currently active for mail delivery (e.g., seasonal, vacant, or under construction).
Question 6: What does SuiteLink accomplish in USPS address standardization?
- Validates suite numbers for any residential address type
- Appends a confirmed secondary address (suite/floor) to high-rise or large business addresses based on the company name (Correct answer)
- Links CMRA addresses to the actual physical building location
- Converts PO Box addresses into equivalent street addresses
Correct answer: Appends a confirmed secondary address (suite/floor) to high-rise or large business addresses based on the company name
SuiteLink uses a firm name lookup to append a validated secondary address element (like a floor or suite number) to addresses of large businesses when the suite is missing from the input.
Question 7: A USPS delivery point barcode (DPBC) for a full 11-digit address encodes how many total bars including frame bars?
- 52
- 62 (Correct answer)
- 65
- 67
Correct answer: 62
The DPBC encodes 11 digits (5-digit ZIP + 4-digit add-on + 2-digit delivery point) plus 1 check digit = 12 digits × 5 bars each = 60 bars, plus 2 frame/guard bars = 62 bars total.
CASS DPV & ZIP+4 Processing 3
How many additional digits does a ZIP+4 code append to the base 5-digit ZIP Code?