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.
X-15 is the fastest plane in the world. Powered by a rocket engine, the X-15 is said to have reached speeds of Mach 6.85, or 4,520 miles per hour (7,274 kilometers per hour).