NBN

National Broadcast Television (NBT) is a Martonian commercial free-to-air television network owned by NBT 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 Five Network, EBS, and RBN.

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.