OK, so the end of the world hasn’t happened yet. Trust me, it will, one day.
In the meantime Internettters are preparing for the inevitable demise of IPv4. On June 6 major websites will turn on IPv6, which they have avoided so far in fear of brokenness at clients.
To see how well prepared you are for IPv6 day, have a look at the following sites:
By the way, my IPv6 link is consistently faster than my IPv4 link.
Finally a bit of embedded stuff to automatically give you some IP information.