The website gap across Dortmund, area by area
Dortmund averages a 18% website gap, but it is not spread evenly. It runs from 38% in 44339 down to 5% in 44149. Areas with fewer than 25 checked businesses are left out — the rate isn’t meaningful there.
Areas without a link don’t yet have enough verified data for a page of their own; they get one automatically when they do.