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Internet Protocol Version four.

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IPV four is one of the core protocols of standards based networking methods on the Internet.

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It was described in IETF publication RFC 791in 1981, and it was the first version deployed for production

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in the Arpanet in 1983.

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It still routes most Internet traffic today despite the ongoing deployment of the successor protocol.

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IPV six.

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With IPv4.

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Each address consists of four octets.

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Octet stands for eight digit binary numbers, so an IPV four address is 32 bits in total.

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So that means we can theoretically address two to the power of 32 devices with IPV four.

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So that means the address space of IPV four is about 4.3 billion.

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Sounds like it's a big number, right?

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IPV four is represented by the decimal equivalent of four octets separated by dots.

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The biggest number one can make with eight binary digits is two to the power of eight minus one.

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That means 255.

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So each octet can be any number from 0 to 255.

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Now.

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Also, there are special meanings associated with two different ending numbers.

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In general, a last number of zero stands for the network.

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Let's call that the base address.

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And a last number of 255 stands for all hosts on that network called the Broadcast Address.

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Computers that are on the same local network share three of the four numbers.

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A computer can be on more than one network, so it can also have several names.