TCP/IP Addressing

IP Addresses

Each computer must have an IP address before it can connect to the Internet.
Each IP packet must have an address before it can be sent to another computer.
This is an IP address: 192.68.20.50
This might be the same IP address:  www.w3schools.com

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An IP Address Contains 4 Numbers.

Each computer must have a unique IP address.
This is your IP address: 118.96.70.57
TCP/IP uses four numbers to address a computer. The numbers are always between 0 and 255.
IP addresses are normally written as four numbers separated by a period, like this: 192.168.1.50.

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32 Bits = 4 Bytes

In computer terms, TCP/IP uses 32 bits addressing. One byte is 8 bits. TCP/IP uses 4 bytes.
One byte can contain 256 different values:
00000000, 00000001, 00000010, 00000011, 00000100, 00000101, 00000110, 00000111, 00001000 .......and all the way up to 11111111.
Now you know why a TCP/IP address is four numbers between 0 and 255.