You probably have a few long-standing numbers in your old address books that are still good. They probably belong to your grandparents and possibly your great aunts and uncles. They have had the same numbers for their entire lives because they have not moved, or if they have they have not moved far. They probably do not see any need to have a mobile phone. Numbers changed quickly with the younger generations for a while, but today, that is turning around yet again. The amount of phone numbers out there has jumped substantially thanks to technologies like mobile phones, other mobile devices, Internet, and fax machines. That means more numbers were needed. New area codes are added all of the time to ensure that is no longer an issue. As people moved from one cell provider to another, and from phone company to digital phone, the demand for numbers rose again, and numbers for people changed rapidly. It was hard to keep up. Number porting has been around for a while, but not like it is toda