Active 5:40 PM EST
UltraViewer remote.
Source: Popup DB
Here’s an UltraViewer screen shot for a fake ID.
Callback Number: (202) 967-2797
Seems like a big operation. Every time I call, I get someone different. Men and women.
They’ve blocked two of my burners and have aggressively called back from several numbers trying to tie me up. 
The auto attendant loop works. Press 0, 1, and then dial any number between 1001, and 1009 and you’ll get a benchode. Not all of them work all the time, though. It varies, and you have to fish through them.