I've received multiple calls from this number and when I say "Hello" they hang up.
When I tried to call back my service would not connect me as the call can't be "completed as dialed."
I'm guessing this is another malfunctioning political robocallbot.

Or it's a spoofed number being used by fake IRS agents, who use a lot of numbers in the 202 area code.
They keep changing the number because callblockers answer and hang up on them.

Calls several times a day. No messages left. I answered one time.  No conversation. Hung up.

This needs to stop. I get an average of 3 calls a day

I keep receiving calls on my cell from this number. No one there. Wish it would stop.