Have a look at Peters (insight) offerings @ https://servelink.com/. I've seen a good number singing their praise over the years. Two US data centres, Calif & Texas & another in London UK.
I'm thinking about contacting Peter to setup a test site or a backup site.
I think my actual ISP found what the problem is. I will know more in a few hours. Something was creating a kind of "infinite loop" and was taking a lot of server resources.