I just saw this number on my missed call list. The call went into voicemail. I listened to the message and it was just a recorded male voice saying 'to enter this code, press 1.' i reckon its one of those telepest. Btw, I'm from U.K.
I got this, just a mere 5 minutes after receiving an unsolicited text from "Viber" with an activation code I've never asked for. They called for the 2nd time just 2 seconds ago with that code again, so I'm pretty sure that's who they are.
BTW - the time was 11:26pm. Very rude even for a robot caller :-(
P.s. I wanted to select "Spam Call" as the call type but that option was not available.