Who called from 2020894121

Rang 3 times, left no message, didn't think phone numbers began with 0!

Same thing happened to me just now.  CID:  "Name Unavailable"  No message.

I just received a call from this number a few minutes ago.  They didn't leave a message.

Add me to the list.  202-089-4121 called me and nobody answered but the line was open.  (?)  I shouted HELLO several times but nobody responded so I hung up.  The number was listed as UNKNOWN CALLER.

1-202-0894121

Called my number in Southern California.  I heard some live sound of what was like a busy place only for a second.  Then I hung up.