Serving a single HTML page from something like Gist or Pastebin

Serving a single HTML page from something like Gist or Pastebin

Are you aware of any service similar to Gist or Pastebin that just serves
an HTML page at my own subdomain, as fast as your typical CDN, and can
manage <1M requests per day reliably?
....as in nothing else required, just ONE HTML file (which then loads
everything else from S3 or something).
I'm also interested in a service that serves one HTML file + manages an
associated domain/DNS.