Who called from 7207393350

rejected call, no message left

Same here.  Did not answer, they left no message.  Same thing happened yesterday.  Same thing in April, but # was 720-445-7739 on 4/21, and 720-259-8262.  I don't know anyone in that area code and I think these calls are suspicious.

Same again, Monday 05/16/16

I received this call last night.  No message.

I had a missed call from this number on 19may16, no message was left. And who calls at 9pm? I live near the area code but do not have a phone number within the state.