This page sits on a server without an A record, just an AAAA record, so it is only accesible via IPv6.

https://ipv6.trippnology.com/

You can add a format query parameter to get your IP in various formats, like so:

1. Text: https://ipv6.trippnology.com/?format=text
2. JSON: https://ipv6.trippnology.com/?format=json
3. JSONP: https://ipv6.trippnology.com/?format=jsonp&callback=yourcallback