IP version 4

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IP version 4

This standard has been used since 1970s. It uses 32 bits for addressing. With these many bits we can have 232 possible address combinations i.e. around 4,29,49,67,296 addresses. These many addresses were more than sufficient for early internet days, but now these are insufficient. That is why IPv6 standard is being pushed forward to be used by us. Even after completion of transition to IPv6, the older IPv4 addresses will still be usable. IPv4 addresses can be specified in two ways: 1- Binary notation and 2- Dotted decimal notation. Here a general IPv4 example is given:

11000000 10101000 00000001 01001000

Computer read this kind of data only. But we people have familiarity with decimal numbers like 0,1,2,3,4…8,9 etc. Above shown binary IPv4 address is easy to convert into dotted decimal number, which can be like 192.168.1.72.