The networks table lists the networks of the Internet. This table is normally created from the official network table maintained at the Network Information Control Center (NIC), though you may need to add your local networks to it.
The networks table has four
|Cname||Official name of the network, supplied by the Internet|
|Addr||Official IP number of the network|
|Name||Unofficial name for the network|
|Comment||Optional comment about the entry|