Who does the phone number ... belong to? Phone Books
Some countries have reverse-search (search by number) directories. If the feature is available for a particular directory for a particular country I've mentioned it in the directory description.
If the number you want is not listed (or if a reverse-search directory is not available for that country) I have no special way to find a number.
I cannot look up any numbers for anybody. If you can't find it, I won't be able to either.