Forum Moderators: Robert Charlton & goodroi
If these domains had no previous owners -- and while under your ownership there's been no activity either -- then you should see no impact on rankings whatsoever. The situation to be wary of would be a precious owner leaving a legacy of funny dark business. So before you take this kind of step, I'd say look into any history of the domain you can find in the Wayback Machine at archive.org.