Definitions

decimal notation

Dot-decimal notation

In computer networking, dot-decimal notation (also known as quad-dotted notation and dotted quad notation for IPv4 addresses) is a method of writing binary numbers in octet grouped base-10 (decimal) numbers separated by dots (full stops). The dots allow for convenient separation of the individual octet values.

For example, the hexadecimal number 0xFF000000 can be expressed in dotted-decimal notation as "255.0.0.0".

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

See also

A similar notation is widely used in typography to number sections of documents (see ISO 2145).

References

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