Recently we had an outage where a domain name expired - we didn't get a warning that it expired due to various factors but it highlighted a freaking major flaw in our systems.
Now, we are fixing it internally, but our current registration provider is namecheap (is hosted on dnsimple) for this domain, which "helpfully" put up a parking page when the site expired which meant some of our client websites were being redirected to their competitors! <facepalm />
So question, who do you use for professional domain name registration where this sort of parking page stupidity can be avoided? A company that will call you if a domain name is going to blow up and if there is an expiration, someone that will set the refresh to 60 seconds and contact us?