For domains that you do control, the best way to deal with that is to: 1. Pay the domain registration for as long in advance as possible (I think it's 10 years

For domains that you do control, the best way to deal with that is to: 1. Pay the domain registration for as long in advance as possible (I think it's 10 years). Also, pay for hosting of any web sites for as long as possible because: 2. Not only delete all the content, but set up the server to serve up a "410 Gone" response to every URL except for robots.txt. For that, you want: User-agent: * Disallow / The reason for the previous two steps is to inform Google (and other search engines) to remove cached copies of your sites. The robots.txt is not for search engines but for the WayBack machine. It has cached copies of your site (most likely) but if the robots.txt file disallows indexing, then it won't return any results from searches there. Sure, after your domains lapse and the new owner replaces robots.txt the stuff from your domains will be available again, but ten years might be a decent amount of time. If not, make sure you repeat as often as you can.