Dot-decimal notation

Dot-decimal notation is a presentation format for numerical data. It consists of a string of decimal numbers, using the full stop (., also called dot in computing) as a separation character.

A common use of dot-decimal notation is in information technology, where it is a method of writing numbers in octet-grouped base-ten (decimal) numbers. In computer networking, Internet Protocol Version 4 (IPv4) addresses are commonly written using the dotted-quad notation of four decimal integers, ranging from 0 to 255 each.

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