I know it’s not a SEO’s responsibility to ensure that a client makes sure that the domains are kept up to date, but it’s one thing I keep an eye on for my clients and my competitors lol…

We are the design and build team behind http://www.elddis.co.uk/ so when Lunar Caravan’s domain dropped it did make me giggle a little

There are normally a couple of reasons why this sort of thing happens and someone needs to be checking the status of corporate domains regularly. Often domains are registered and looked after by the company itself, but when people change jobs or leave the company the domains can be forgotten and lapse. Alternatively the domains could be registered through an ISP (like us) but if the ISP goes bust, so does the renewals and the domains are lost. The easiest thing to check and keep a track of is the admin contact email address on the .com, if that stops working the domain could expire without you getting notification.

Dave