Comment by kccqzy

Yeah of course adding the extra dot will work. The dot at the end simply means do not try to append the local search domain. Interestingly bad “security” software will often block domains without the trailing dot but permit the one with the trailing dot.

The problem of having two hierarchies in opposite directions means that it is advantageous to store it while reversing one of the hierarchies. I think the earliest Google Search backend used a format like org.myorg.something/something internally. This representation worked great for key-value storage systems where the keys are sorted.