WASHIGNTON D.C. — The Federal Trade Commission (FTC) has released the latest edition of the Do Not Call Registry Data Book, which includes more information on robocall complaints, new information about the types of calls consumers reported to the FTC and a complete state-by-state analysis.

More than 229 million phone numbers in the U.S. should not receive calls from telemarketers, thanks to the National Do Not Call Registry. The registry allows consumers to opt out of receiving telemarketing calls.

Now in its ninth year of publication, the Data Book contains a wealth of information about the registry for fiscal year 2017 (from October 1, 2016 to September 30, 2017).

The registry added more than 3 million users since the 2015-2016 fiscal year. The largest complaint by consumers concerned robocalls. The program uses a system that informs consumers how many of their complaints were from live callers versus robocalls.

There were 4,501,967 complaints about robocalls and 2,563,081 complaints about live callers, according to data from the Data Book.

Consumers can sign up for the registry for free.

“The Federal Trade Commission works to promote competition and protect and educate consumers,” according to the FTC website, www.ftc.gov. “You can learn more about consumer topics and file a consumer complaint online or by calling 1-877-FTC-HELP (382-4357).”