Does the US verification plan cover both US verifications and US ZIP lookups? Yes, the US verification covers requests that are made to either the US verifications or the US ZIP lookups endpoint. Related articles If an address is unsuccessfully verified, does that count towards my monthly volume? Is your US Address Verification API CASS Certified? How often is your data updated? What if I send more verifications than the amount included in my plan? What do the different US Mail Strictness Settings do?