Who called from 2027822257

Its the same as all the other 202-782 number i submited. no one and rings a couple times.

Unwanted calls -- from three numbers, all with the same area code and prefix and all from the same originator (according to my "caller ID -- "DITCO DTSW":
202-782-0891
202-782-2257
202-782-2276

No one answers and calling the numbers just results is endless ringing.  

So far, these just come during the day.

Vet's post was exactly right. This is an automated appointment confirmation for military medical appointments.