Soltok IV
Soltok IV was the inhabited fourth planet in its star system. This planet was located in the Demilitarized Zone. 

In 2370, Lieutenant Commander Calvin Hudson claimed that a Federation merchant vessel, fired upon by the Cardassians, was transporting medical supplies to Soltok IV. Gul Evek claimed that the ship was carrying weapons and had refused to be boarded. ()

Background information 
 

According to StarTrek.com, this planet, located in the Soltok system, orbited a star named Soltok. ;  

The  and the closed captioning for the episode spelled the name of this planet as "Saltok IV".

According to Star Trek: Star Charts (p. 47, "United Federation of Planets I") and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the primary of the Saltok was a K-class star. In 2378, Saltok IV was listed as a Federation member.

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Soltok 04
Colonies