Who called from 4060000000

i have had that happenonh to me as well. only they have  actually asked for a person.unfortunately for them this person no longer lives here. i have no idea what these numbers are and am seeking answers also.

Have gotten 2 calls from this number within an hr. Did not answer and really apprecied the prior posts.

no one on line just silence

did not answer but looked online and not a valid phone #

We have the 406 prefix.  They called once this week when we were not home.  Just called again, after a few Hello's from me there was lots of static and they asked to speak to my husband.  He did not sound very professional, and I just hung up on him right away..