They thought 4 billion would be enough. Wrong, said the Internet.
They're response: 340 trillion, trillion, trillion. We're not sure just how many zeros that is, but it can be written as 2 to the 128th power (or 5 times 10 to the 28th power).
Of the 4 billion addresses possible under IPv4, only about 7% are left. They'll probably all be used by early 2012.Every device — computer, cell phone, utility meter — connected to the Internet needs its own address in order to communicate back and forth. The addresses are bundled into what is called Internet Protocol version 4, released in 1981.
That might cause some problems, but don't panic. IPv6 is taking over. It offers 128-bit numbers, as opposed to IPv4's 32 bits. Most people don't know or care about their IP address, but most computers have fairly easy ways to find yours. Your ISP or business assigns them. Currently, your address would look something like this: 123.45.678.9. With IPv6, the address might look like this: 3ffe:1900:4545:3:200:f8ff:fe21:67cf. (The Web site whatsmyip.com can find your IP number for you.).
Check out more info at -
1. Wikipedia
2. MOXA
3. CAIDA
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