NBN

National Broadcast Network (NBN) is a Martonian commercial free-to-air television network owned by NBN Media, a subsidiary of Suncast. It was launched on October 13, 1959, and is made up 25 stations throughout Martonia. It is one of the "Big Four" commercial networks, along with ABS, EBN, and Five Network.

As of 2022, it is the second most-watched television network in Martonia. It is behind the public MBC Television network, but ahead of the other commercial networks.