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‫Internet protocol version four IPv4 is one of the core protocols of standards based networking methods

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‫on the internet.

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‫It was described in IETF publication RF seven, nine one in 1981, and it was the first version deployed

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‫for production in the ARPANET in 1983.

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‫It's still roots most internet traffic today, despite the ongoing deployment of the successor protocol

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‫IPv6.

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‫With IPv4, each address consists of four octet.

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‫Arquette stands for eight digit binary numbers, so an IPv4 address is 32 bits in total, so that means

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‫we can theoretically address two to the power of 32 devices with IPv4.

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‫So that means the address space of IPv4 is about four point three billion.

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‫Sounds like it's a big number, right?

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‫IPv4 is represented by the decimal equivalent of four octet separated by dots.

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‫The biggest number one can make with eight binary digits is due 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 zero to 255.

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‫Now also, there are special meanings associated with two different ending numbers in general, the

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‫last number of zero stands for the network.

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‫Let's call that the base address and a last number of 255 stands for all hosts on that network called

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‫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.