There is a lot of information out there talking about how to
block calls on landline using a traditional call blocker. The
short answer is that yes, traditional call blockers can stop
some unwanted calls. But analyzing imp’s proprietary data, which
looks at hundreds of thousands of calls, traditional call
blockers can really stop only about 5% of the unwanted landline
That means traditional call blockers are only a 5% solution at
best. Why? Well, as highlighted above, it is easy to fake caller
id information. This means it is possible for scam callers to
sneak around the defenses of traditional call blockers.
Another problem is that most call blockers only work after the
fact. So a call has to first invade your home, ringing, and
ringing, and ringing, and then you have to manually hit a button
to “block” that specific number.
Which leads to the third reason why call blockers can’t block
calls on landline: there are hundreds of millions of possible
phone numbers able to be used. So if you block one number, the
same scam caller will just call you from another number. And if
you block that number, they will use another one.
Take this example from a company called Dynata. They have called
from no less than 15 different numbers. Using a traditional call
blocker would have meant that each of these calls rang through.
And each would have required a manual block after the fact.
But imp stopped each and every one. Dynata could try 100 or even
1,000 different numbers. None of them would be able to sneak
into the home.