On Wednesday the Federal Communications Commission said that it would begin releasing a spreadsheet every week of numbers belonging to robocallers and telemarketers in the hopes of making it easier for third parties to build Do Not Call functions into their products.

The spreadsheet, published as a downloadable CSV file, contains numbers reported through informal consumer complaints. "Consumer complaints to the FCC are a vital tool in the agency’s work,” a statement by the FCC said. "Complaints about unwanted calls and texts are by far the largest complaint category to the agency, with over 215,000 complaints last year.”

The Commission added that it does not verify all the facts in the complaints that it receives.

The FCC published its first list today, which includes entries from consumer complaints filed on or after October 1, 2015. The spreadsheet already has 9,803 entries from this month alone. It will be refreshed each week to include new complaints from the previous week. The Federal Trade Commission releases its own database periodically as well.

Stamping out robocalls and unwanted telemarketing calls has been difficult for government agencies. In June, the FCC reminded service providers that it is legal for them to allow customers to block calls and texts from certain numbers. "While such services are available today as apps on some smartphones and on VoIP phone systems, work is still underway for many carriers and third-party providers to offer consumers these tools on traditional landline networks,” the FCC wrote.

The FCC and the FTC have put forth bounties and outlined punishments for robocall and telemarketing violators and have offered teams rewards to incentivize them to build a better robocall trap. But robocalling is legal for charities, government and political groups, and pharmacies sending prescription updates, so it’s not simple to separate the wheat from the chaff. In August, the FTC awarded a company $25,000 for their app called RoboKiller, which analyzes data from the incoming call to detect robocalls.