I have received 7 calls from the number 01123418701499 to my cell phone.

Through internet research, I found that 011 is the code for dialing OUT OF the US, Canada. 234 is the code for dialing TO Nigeria.

I answered once and the other party spoke something in a latino accent. I told them they had the wrong number and hung up.

I also got one call from 01123484904988.

Perhaps it's someone trying to make an international call from the United States, but getting it wrong.