Due to telecom regulations in certain countries,  proof of address verification can be mandated by law in order to own a phone number of a certain country. All submitted proofs are securely stored and used only in the event if we are contacted by authorities of the country you have purchased phone numbers.

If you are not the direct end-user of the phone numbers within your account (i.e., you are reselling to customers of your own), we advise  that you collect verification proofs for each of your phone numbers from your end users.

In case you need assistance on uploading a verification proof, you can check out the FAQ: How do I submit a proof of address?