I'm a bit confused. Are these domains only usable as web redirects? Or is it just that the examples shown are used as such, but we can use the domain as any other one?
I wonder how having multiple entries to the same page will affect page ranking.
Looking up gist.new, I wonder why there are 2 requests done:
Due to HSTS (It maybe preloaded in your browser), the browser internally redirects http://gist.new to https://gist.new. And then receives a 301 from the web server (which is cacheable) to redirect you to your final destination.
Looking up gist.new, I wonder why there are 2 requests done:
307 Internal Redirect
301 Moved Permanently
Before getting the 200 request to https://gist.github.com/.