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What is IP Address?

Also known as an IP Number or Internet Protocol Number or a dotted quad. It is a unique number consisting of 4 parts separated by dots, e.g.

Each part can have range from 0 to 255. Every machine that is on the Internet has a unique IP number - if a machine does not have an IP number, it is not really on the Internet. Many machines (especially servers) also have one or more Domain Names that are easier for people to remember.

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