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HBO late-night host John Oliver called out the FCC on his show last week for the robocall problem plaguing American cellphones, drawing nationwide attention to the problem that almost every American is dealing with. 

Expand chart
Data: Robocall Index, American Community Survey; Map: Harry Stevens/Axios

Why it matters: It's one of the most complained-about issues in America. The FCC gets roughly 200,000 complaints each year about robocalls. Nearly 48 billion robocalls were made in 2018, according to YouMail Robocall Index.

Driving the news: While the problem impacts almost every cellphone user in America, data from Robocall Index shows that area codes from certain parts of the country are much more likely to be used for robocalls. 

How it works: Robocalls from certain areas in the U.S. don't necessarily reflect where the originator of the call is coming from. Often scammers use a very popular technique called "neighbor spoofing," in which they copy the area codes of local jurisdictions to make it more likely that people will pick up the phone.

  • Washington, D.C., has a high population of robocalls to its population because scammers often pretend to be calling on behalf of government agencies like the IRS or ICE.
  • Robocall area codes also tend to reflect highly-populated areas. Some regions, like Atlanta, and parts of the Southeast region of the U.S. and southern border states also have high percentages of robocalls mimicking those area codes.
  • This could be, according to a telecom source who works very closely on the robocall issue, because robocallers tend to target vulnerable populations, like older people, immigrants and minorities.

The big picture: The FCC has prioritized the problem and has introduced new standard to tackle robocalls last month. Most of the major wireless carriers have committed to implementing standards that verify if a call is real or if it comes from a computer.

Go deeper: New efforts could reduce robocalls over the next few years

Go deeper

Updated 25 mins ago - Sports

Olympics dashboard

Katie Ledecky in Tokyo. Photo: Ding Xu/Xinhua via Getty Images

🛑: Simone Biles won't compete in individual vault or uneven bars

🏊‍♀️: Katie Ledecky wins gold in women's 800m freestyle

🏊: Caeleb Dressel breaks world record in men's 100m butterfly, 3rd gold

🗓: The Olympic events to watch today

🇬🇧: Britain wins gold in first-ever Olympic mixed 4x100m medley relay

🎾: Novak Djokovic defeated in Olympic semi-finals

💻: Japan tests teleporting games and "remote cheering"

Go deeper: Full Axios coverage

Updated 1 hour ago - Sports

Simone Biles won't compete in individual vault or uneven bars Olympic finals

Photo: Loic Venance/AFP via Getty Images

Simone Biles will not compete in the individual vault or uneven bars finals at the Tokyo Olympics, USA Gymnastics announced Friday.

Why it matters: USA Gymnastics said Biles, who previously withdrew from the individual all-around and team finals to prioritize her mental health, will continue to be evaluated to determine if she'll compete in the balance beam or floor exercise events.

2 hours ago - Sports

American Katie Ledecky wins Olympic gold in women's 800m freestyle

USA's Katie Ledecky reacts after taking gold in the final of the women's 800m freestyle race. Photo: Odd Anderson/AFP via Getty Images

American superstar swimmer Katie Ledecky grabbed her second gold medal of this year's Olympic Games, winning the women's 800-meter freestyle race Saturday in Tokyo.

Driving the news: Ledecky, who holds the world record in the 800m freestyle, is considered one of the best women swimmers of all time. Saturday's final marks her third straight Olympic gold in the event.