Borrower defense
Silence repeat harassment
Use the public registry to create a reviewable blocklist for the numbers that have been verified by OLA Report moderators.
Collector blocklist exports
Download verified public identifiers, review them, then import or block them in your phone app. This list is a safety aid—not proof that every number is currently active.
iPhone/Android: open the VCF, inspect the entries, save as a contact, then use your phone's built-in block controls. Truecaller and Whoscall can import the CSV where supported.