Interesting catch, since moving to Germany I noticed some "something24"s (though only one comes to mind now) so I would indeed expect that to show up here, even if lowly ranked.

It looks like there are either no numeric pre/suffixes at all (that sounds unlikely) or they are not included? Looking through the raw I see nothing matching /[0-9]\+?$/

I wonder who started the whole 24 thing. I know Deutsche Bank used to use it, googling "db24" gives them as the top result. Ah even www.db24.de redirects to their site.