Robo I think. I have no more robo and it ran once and went away.

Caution, 424-284-1901 is a "spoofed" number, which means that whoever called you "tricked" your caller ID to display an incorrect phone number. Telemarketers do this so you cannot complain. They claim to be debt collectors. Don't give them any information. Report them!! They have called me 3 days in a row - left no message.

on June 18, I received a call from this number by a person that said his name was Leo...I asked why he was calling and he started calling me a f**king [***] and was swearing up a storm. I told this moron to stop with the name calling and when I
he hung up on me I called the above number back but kept getting a message that number was not going thru and to call back later...because I have caller ID I was able to record on paper this phone number...I've been called before and as asked to please remove my number from future call but this call on the 18th really upset me....

Other sites have reported this number as an auto insurance scam call.

Another spam call. No one is safe from there predators.