Lately, I have been in touch with Ring.To about a concern:
We get an abundance of calls from "Unknown" callers. The number will show up on the Caller ID, but the name reads as "Unknown".
These calls are (in our case) 100% scams and phishing attempts. Usually, what happens is...
We will receive a hang-up call from an Unknown caller with an area code from a far away city/state (NY, CA, or Miami, Las Vegas, etc.).
Not long after, we receive a call from a telemarketer or robocall with an In-State area code. (Both calls still read "Unknown".)
I've done some research...it seems the common practice for these Scammers is to have their program call to make sure it is a working number (either by an answer, or answering machine) and then they spoof a number from a local area code from which they make their pitch.
Is there a way to block calls from callers that show their name as "Unknown"?
I'm not sure what you want to do is possible. I know CID can be used to filter calls but I think I remember something about the Obi not being able to use CNAM to filter. I could be mistaken about that or my info out of date.
If you don't find a better option then I think you should look over this solution to Robocallers.
http://www.obitalk.com/forum/index.php?topic=8802.0
I also have Ring.to service with my Obi and all my calls (even legit ones) are marked as "Unknown", since Ring.to doesn't support CNAM.
What I've been doing for telemarketers/scammers is manually blocking the number in my ring.to dashboard. In the beginning I was getting several calls a day, but after awhile I only have to block one or two numbers a week.
I also made sure that "Restricted" numbers are blocked in my dashboard as well. Before I switched over to ring.to I had so many "restricted" callers phoning me. Just look at how many "restricted" callers I had in one day. The list is longer than the screenshot.
(http://i.imgur.com/ZjfVrVc.jpg)
Be nice if one could set a, "ring between the hours of...".
Quote from: 0biWanKenobi on April 05, 2015, 09:14:15 AM
Just look at how many "restricted" callers I had in one day. The list is longer than the screenshot.
All I can say to that is WOW! :o
One of the things, I like about VestaLink (besides CNAM), allow anonymous calls (y/n) :)