networks - network name information
The file /etc/networks
is a plain ASCII file that describes known DARPA
networks and symbolic names for these networks. Each line represents a network
and has the following structure:
name number aliases ...
where the fields are delimited by spaces or tabs. Empty lines are ignored. The
hash character ( #
) indicates the start of a comment: this character,
and the remaining characters up to the end of the current line, are ignored by
library functions that process the file.
The field descriptions are:
- The symbolic name for the network. Network names can
contain any printable characters except white-space characters or the
- The official number for this network in numbers-and-dots
notation (see inet(3)). The trailing ".0" (for the host
component of the network address) may be omitted.
- Optional aliases for the network.
This file is read by the route
(8) and netstat
(8) utilities. Only
Class A, B or C networks are supported, partitioned networks (i.e., network/26
or network/28) are not supported by this facility.
- The networks definition file.
This page is part of release 4.13 of the Linux man-pages
description of the project, information about reporting bugs, and the latest
version of this page, can be found at