CASS or the Coding Accuracy Support System was developed by the USPS®
to evaluate the accuracy of address-matching software programs. For a product to
be CASS Certified™, it has to obtain a minimum score of 98.5% correction
accuracy for ®, Carrier Route, five-digit and LACSLink® and
100% for Delivery Point coding, DPV®, and RDI™.
PAV API is CASS Certified in the following areas:
Five-digit coding validates existing five-digit zip codes.
ZIP + 4/ Delivery Point (DP) coding
Delivery Point (DP) is a single US mailbox or location where mail is delivered,
and is assigned a two-digit number between 00 and 99 by the USPS. The combination
of a DP number and Zip + 4 code provides a unique identifier for every deliverable
Delivery Point digits are encoded in the POSTNET delivery point barcode (DPBC) or
as part of the Intelligent Mail Barcode (IMB), both of which are used for USPS automation
Carrier Route coding
US postal mail containing carrier route codes can be presorted to the carrier route
level to take advantage of presort postage discounts.
A validation process that confirms the existence of a specific US address (down
to the apartment or suite number) and the fact that it can be delivered to. DPV
checks for one of the following scenarios:
- The address has the correct primary and secondary data
- The address has the correct primary but not secondary data
- The address cannot be validated
A system that matches US addresses against a list of rural route, highway route,
and box number addresses that have been renumbered or renamed due to 911 address
conversions. These conversions involve changing rural-style addresses to city-style
addresses for 911 emergency system implementations.
Residential Delivery Indicator identifies whether a US address is classified as
residential or business. Avoid residential delivery surcharges by verifying delivery
type status prior to shipping, and identify shipping patterns to improve operational
Provides improved business addressing information by appending known secondary (suite)
information to business addresses.
Enhanced Line of Travel or eLOT was developed by the USPS to give mailers the ability
to sort their mailings in approximate carrier-casing sequence. Mailers may use eLOT
processing to qualify for enhanced carrier route presort discounts.
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CDYNE PAV API
The following trademarks are owned by the United States
Postal Service®: CASS, CASS Certified, DPV, LACSLink, United States Post Office,
USPS, ZIP Code, and ZIP + 4.