A look at online tools like Whitepages and TrueCaller to identify callers, block spam and look up that number that called you.

The tool quickly identifies most personal and business phone numbers, so it's a worthwhile bookmark. With the free plan, ...

And now you can fight back with a simple, free solution ... Note that you can also search by name, address and email, as well, but for our example, we'll use a phone number.