[leesalminen]

You can use mDNS [0] to publish an internal domain to others on the same LAN. Alternatively, you can use something like a Pi-Hole [1] to be the DNS server for your LAN. Pi-Hole gives you GUI way to point any domain to any IP [2].

[0] https://wlog.viltstigen.se/articles/2021/05/02/mdns-for-linu...

[1] https://pi-hole.net

[2] https://docs.callitkarma.me/posts/PiHole-Local-DNS/