Try entering "ac" or "ac." in your browser. It's a TLD with an A record, so it should just work.
If you have a host on your domain also named that, well, things might get interesting depending on how your resolvers work (domains, search order, dotting, whatever). Plus, if you're in a corporate environment or something else with a proxy, add all of those demons, too.
Buckle up.
(Random trivia: I checked all 676 two-letter possibilities, and these are the ones which should work: AC AI CM DK GG IO JE KH PN SH TK TM TO UZ VI WS)
That ("fixup") and the other leak-to-Google stuff ("keywords") are probably the first two things I turn off when I start using a browser. I had too many mispastes turn into potential data leaks before figuring that out.
If you have a host on your domain also named that, well, things might get interesting depending on how your resolvers work (domains, search order, dotting, whatever). Plus, if you're in a corporate environment or something else with a proxy, add all of those demons, too.
Buckle up.
(Random trivia: I checked all 676 two-letter possibilities, and these are the ones which should work: AC AI CM DK GG IO JE KH PN SH TK TM TO UZ VI WS)