[justincormack]

I thought this might be an issue when they did generic TLDs, but as far as I can see they are only selling to registrars, so they are not expecting web sites at the top level, there will still be a subdomain, and browsers will probably not go to the top level domains.

Interestingly, http://dk/ has a valid A record to 193.163.102.24 which curl will show is a 301 redirect, but you cannot load it in Chrome or Firefox. dk has MX records too (I remember an old story about someone who had the email address m@dk or similar), but I think generally having any records for the top level is frowned upon now.