How to make PCs behind NAT as subdomains?

Question

Domain Name System

There is a router on OpenWRT and white IP. There is also a chifty.top domain
How to do this:
notebook.chifty.top -> 192.168.0.2
pc.chifty.top -> 192.168.0.3
server.chifty.top -> 192.168.0.4 ...
That is, as I understand it, I need to enable answer DNS requests on the router and redirect them to internal PCs.
Tell me where and what should be registered?
I feel that it is somewhere in dnsmasq.conf and a couple of ticks in the web face, but I don’t know exactly which ones :)

Answer 1

https://forum.openwrt.org/t/adding-dns-entries/3258

Edit file:
/etc/config/dhcp
and add section:
config domain
option name 'host_name'
option ip 'host_ip'
for each host and restart dnsmasq.
Or in LuCi: Network -> Hostnames

Answer 2

Keyword: "Reverse proxy" (any implementation, from nginx to F5, netscaler)
Algorithm, on external DNS:
notebook.chifty.top -> Public IP
pc.chifty.top -> Public IP
server.chifty.top -> Public IP
It is further routed at the name level to your gray IPs behind NAT.
PS
And stop, of course, we are only talking about HTTP traffic.