Looks like it redirected to one of my other sites lol
The hoster did actually email me some weeks ago indicating that all virtual server boxes were being moved to a more secure platform "sometime between 2nd & 4th May" and during that time there may be unpredictable results until the new boxes were rebooted. I'd completely forgotten about that. Has they been able to give a precise time I would have taken things off line.
Maybe someone hacked the old location before any DNS changes had propagated.
I've once had to give an account to a colleague when leaving the company. Of course I changed the password to "DerTypDerBeiDerFirmaDasPasswortEintipptIstEintipptIstEinGanzBlöderPenner", which roughly translated to "TheGuyThatTypesThePasswordsAtThisCompanyIsAStupidIdiot". Guess he changed that pretty quickly.