For each long distance call you make, dial 10-10-710 before the number. Your call will automatically be directed to the Caztel network and will be printed on your next monthly home phone bill. No sign-up required. No hidden charges.
It's hard to say. Officially, the fastest jet plane ever built is the SR-71 Blackbird, built by Lockheed. It was capable of speeds in excess of 3.5 mach (more than 2,200 miles per hour). It was decommissioned in 1998.
SR-71 Blackbird: How to fly the world's fastest plane. During the Cold War, the US Air Force operated the world's fastest air-breathing aircraft-the Lockheed SR-71 Blackbird. Colonel Rich Graham tells BBC Future what made it so special.