| About the zip codes, all US zip codes may be registered and these are very valuable, but there are foreign zip codes in large cities that have not been all registered, and these get traffic. Plus, one NNNNN.com may be a foreign postal code for 3-4 different cities (say Spain, Germany, and Sweden will all use the same NNNNN for postal codes), so numbers are scarce and there are lots of potential uses for any particular number. Plus, while the US zip codes are all registered, the postal service adds 20-50 new zip code numbers every year in order to account for population growth, so a number that is random today could be a valuable zip code tomorrow. There are other uses for numerics as well other than zip codes, lucky numbers, numbers with significance in China, birthdates, part numbers, numbers with repeating letters or sequences, numbers that spell words on cell phones, and many other uses. |