Who called from 8018045799

This number called me on my mobile phone and I didn't answer. They didn't leave a message. Using google I was able to determine that the company behind this number is some company Xo Utah, Inc that I've never heard of. Are they a telemarketing firm?

Called me on a Saturday at 9am, didn't answer and they didn't leave a message. Not sure who it is.

Called, I didn't answer and they left no message, but I'm guessing by other responses that this is spam.

No message left to a number on the do not call list.  Probably not benign.  A legitimate business or person would leave a message - and not call everyone.

Got a call sat mid day. No msg. Not calling number back based on similar replies. Bogus.