Dot-decimal notation

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An illustration of an IP address (version 4), in both dot-decimal notation and binary.

In computer networking, dot-decimal notation (also known as quad-dotted notation and dotted quad notation for IPv4 addresses^[1]) is a method of writing binary numbers in octet grouped base-10 (decimal) numbers separated by dots (full stops).

IPv4 addresses are almost universally presented in dot-decimal notation (see illustration).

For example, the hexadecimal number 0xFF000000 is expressed in dot-decimal notation as 255.0.0.0.

[edit] See also

• ISO 2145 - A similar notation is widely used in typography to number sections of documents.
• IPv6 notation - Internet Protocol Version 6 addresses are written in a hexadecimal colon-separated notation.

[edit] References

1. ^ What is dot address? - a definition from Whatis.com - see also: dotted quad

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