By making an HLR request, you can see the results in just a few seconds. The speed of obtaining information depends, of course, on the number of your traffic that you launched for inspection. On average, it will take up to 10 minutes to send 10,000 numbers to send and receive the result and then upload it to the csv format, which will make it easier for you to work with this data.
Results provided in next screenshot you can understand in next way:
Active - active number
Absent - offline or out of coverage at the moment
Unknown - invalid number
Failed - unavailble \ invalid number \ Operator do not provide data \ destination is unavailable
Barred - DND status. Number can't accept incoming SMS messages. You can request new HLR in some time
In the Web interface, it will look like this. I note that the data obtained may differ from country to country: