Is it of a considerable size? In the event that it doesn't have in any event 200 - 215 million numbers

 Is it of a considerable size? In the event that it doesn't have in  mobile database  any event 200 - 215 million numbers, you might be burning through your time. The littler it is, the slimmer your odds of finding the number you're scanning for! The enormous ones straightforwardly talk about how huge their database is. The little ones don't. Go for something no under 210 million numbers.