Posted by The UPS address validation at the street level complies with the United States postal service programs. The data which is provided to the UPS for the street level address verification is CASS certified, which assures the highest level of accuracy.
CASS certification is known as the highest class of data standardization, and hence the most of the UPS street level verification relies on this certificate. Hence as a conclusion, it can be said, that the data we receive is CASS certified from the United States postal service.