My using Sprint’s cellular network to dial in to Netcom through my cut-out number made it look as if the cut-out number was originating from Sprint’s network when it really wasn’t. This was because both the cut-out number and Netcom’s dial-up number were in the same switch. The Sprint engineer now decided to change tactics and perform what’s known as a "terminating number search." Rather than looking for calls placed from the traced number, he looked for any subscriber calls to that number.