Cptn Dent was where Plasmaton House, in Krasis & Hippias Passage, in T'nnbrrrj Swells, was located by Novrimber Vivteenf, 20001. (PROSE: A letter from the Master)
Behind the scenes[]
"Cptn Dent" appears to be referencing Captain Dent from TV: Colony in Space, but it's unclear in Cptn Dent is a city, colony, planet, continent, or something else.