They just called me 10 mins ago and I let it go to voicemail so then I listened to the message and it was someone using the prankdial app or website to leave a recorded message and at the end it said you've been pranked by prank dial

didn't leave a message

its a relay line from internet phone to landline. My friend called me from his laptop over wifi in a coffee shop and this number came up, so it can be any clown with a computer calling for any reason

Rang once and hung up!!

got missed call, can could not call back