Yes - each set of numbers previously checked with DNCCentral.com has a validity date.
Once a number expires, you will need to re-check it to obtain a new validity date. The same charges apply for a re-check.

You will be notified by email that your file is ready for download. Proceed to the LOBBY or TRANSACTION menu to download your file.

Pending status for an uploaded number means that the system cannot provide the status of that number. We exclude those numbers and send them through for filtering the very next day.

Once we get the status, you will receive another email from us to notify you to download the new file.

No - DNCCentral currently focuses only on filtering DNC registered numbers.