Who called from 7858936000

Called my cell phone, rang once, beeped like a fax machine and then hung up! Hope this is not a scam number!

Called my number and beeped like a fax machine when I answered. I blocked the number from my phone.

Called and said they were calling about a drawing I entered. Wanted to transfer me to another number. I hung up.

unknown caller didnt leave message and I dont know that number.