For example,
https://assets.avm.de/files/docs/fritzbox/fritzbox-7590-ax-v...
"You can also enter the IP address of the FRITZ!Box or the emergency IP.
The preset IP address is: http://192.168.178.1
The emergency IP address is: http://169.254.1.1"
Typing "fritz.box" into a browser is useless unless one already has an internet connection.
If it's a remote DNS query then is that really "internal networking".
Looks like there's an ad for NFTs at fritz.box along with some links to Javascript files and nothing else. No content. I think I'd rather just use a local address.