How to Setup a Raspberry Pi DNS Server – Pi My Life Up

A DNS server is what handles translating a domain name such as pimylifeup.com to its end destination. It’s what helps transform IP addresses from something like “210.345.231.345” to the more user-friendly domain name system. By setting up a DNS server on your Raspberry Pi, you can use it to improve the time it takes for your computer to perform DNS requests.

https://pimylifeup.com/raspberry-pi-dns-server/