To test your readiness for IPv6 switch, go to http://test-ipv6.com/.
To learn more of IPv6, visit http://www.nro.net/ipv6.
Some facts on IPv6
Since IPv6 addresses are 128 bits long, the theoretical address space if all addresses were used is 2128 addresses. This number, when expanded out, is 340,282,366,920,938,463,463,374,607,431,768,211,456, which is normally expressed in scientific notation as about 3.4*1038 addresses. That's about 340 trillion, trillion, trillion addresses.
It's enough addresses for many trillions of addresses to be assigned to every human being on the planet.
The earth is about 4.5 billion years old. If we had been assigning IPv6 addresses at a rate of 1 billion per second since the earth was formed, we would have by now used up less than one trillionth of the address space.
The earth's surface area is about 510 trillion square meters. If a typical computer has a footprint of about a tenth of a square meter, we would have to stack computers 10 billion high blanketing the entire surface of the earth to use up that same trillionth of the address space.
Looks like this figure is almost infinite.
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