Looks like the internet's problem with running out of IP addresses might be
solved in the very near future. Apparently trillions
of addresses may emerge!
There are 13 root domain name servers that hold the master records for all
such address mappings. But the range of numbers used under the current system,
Internet Protocol Version 4 (IPv4), is slowly running out and about two thirds
of the 4.3 billion numbers allocated have been used up so far. So a new set
of rules, called IPv6, has been designed to take its place.
IPv6 will increase the number of numerical addresses massively, multiplying
current capacity by 25,000 trillion, trillion. This should allow for virtually
any number of new computers or devices to be connected to the internet in the
future. IPv6 will also introduce reliability and security enhancements.