What is DNS and where can I find DNS codes for US?

What are American DNS codes needed for?
Explain why people are trying to access a U.S. Netflix account from another country?
How do I install and configure the US DNS code on my device?

DNS addresses are codes. According to the source, The Domain Name System (DNS) allows the names of websites with their basic IP addresses which adds efficiency in this process. These codes can be used by U.S. citizens who are currently abroad due to business trips, travel and more, and want to enjoy watching their favorite Netflix series or movie.

Also DNS is needed to have a large selection of movies and different applications from Netflix for the user, because in other countries it may be different. https://technologeek.net/free-netflix-dns-codes-for-us-2021/ on this site you can read information about DNS and how to use it, and how to configure it.