Who called from 8086919176

I just got a call from this number but no message

I got calls from this number, no message either. When you call back, it doesn't even ring.

I got a call from here in MD. I did not answer and they left no message. I looked it up on reverse phone call. And it is located in Honolulu!

Its a Medical survey company. i called back and got an answering machine.

Got a call from 808-691-9176 in Honolulu, HI.  When I called back after many rings, it said "If you got a call from this number please disregard".  They left no message.  I live in Florida.  I used to live in Hawaii.