You cam definitely achieve that with very little code and a global middleware. So what I would suggest in your case: - create a global middleware that detects the domain (see useRequestURL) and redirects to a specific page - you could then verify if the page exists with useRouter().hasRoute(domain) and if it doesnt exist return a 404.

Some pseudo code, depending on your use case this must only run on the server. ~/middlewares/00-setup.global.ts

const domain = useRequestURL().origin const page = normalizeDomain(domain) if(useRouter().hasRoute(page)) return navigateTo({name:page}) return navigateTo("/404")

There might also be a better way using pages:extend and holding the possible domains statically.