The original inhabitants of Namezk were the Bilini, a species that once held the Orions in slavery by the Treaty of Kammzdast until they were liberated in the Orion War. Afterwards, the Bilini civilization fell into decline. Most Bilini lived among the Orions, while a few lived on preserves that were protected by law. For its government and legal protection of the Bilini, which the Federation quite appreciated, Namezk was known as "The Last Free Orion World". However, it was anything but; merely a useful image behind which the Orions carried on with their deceptions and other illicit activities.
Namezk was formerly unknown to the Federation. During the Four Years War, it was occupied by the Klingon Empire, but suffered relatively little damage. It was freed at the close of the war, and discovered by Starfleet ships pursuing fleeing Klingon forces. The USS Patton detached from the fleet to make a complete survey and made first contact with inhabitants. The Orions there were eager to trade with the Federation and rebuild their economy, and happily provided them with useful information on Klingon movements towards Kolm-an.
They remained neutral however, and went on to trade freely with the Federation, the Klingon Empire and the other Orion Colonies in equal measure, and it became a gateway for spies for and against all three. Moving high-tech goods from the Federation to the Klingon Empire was a particularly good business for Namezk, but damaging to the Federation. Thus in the late 23rd century, Starfleet Intelligence flooded the market with cheap Klingon disruptors in an effort to generate unrest and turn Namezk's attitudes against the Klingons. The attempt backfired and Orion merchants simply re-sold the disruptors everywhere else, generating unrest in Klingon space, Federation space and Orion space, while Namezk itself remained untroubled. The world remained carefully watched by Starfleet.
Namezk had a total surface area of 526,039,570 square kilometers and, with 56% land mass, a total land area of 294,582,150 square kilometres. It was made up of 27% normal metals and 10% radioactive elements, with trace quantities of gemstones, industrial crystals, and special minerals. It had a cool temperate climate with a thin class M terrestrial atmosphere and a 29-hour day (FASA RPG module: The Orions: Book of Common Knowledge).