Well there is Github Pages, where you could host a static site, although I'm not so sure it will still be around in 30 years time. Then there's the 10 year ICAN

Well there is Github Pages, where you could host a static site, although I'm not so sure it will still be around in 30 years time. Then there's the 10 year ICANN domain renewal limit, which means you have to 'be there' in two other 10 year intervals to renew the domain.