Public DNS are written instead of (or in addition to) those provided by your internet provider. Configure them in your router or in the network settings of the device on which the player is installed. If it is written into the device with the player, then it usually replaces the DNS specified there.
Google DNS
8.8.8.8 / 8.8.8.4 / 8.8.4.4
CloudFlare DNS
1.1.1.1 / 1.0.0.1
Adguard DNS
94.140.14.14 / 94.140.15.15
Open DNS
208.67.220.220 / 208.67.222.222
Quad9 DNS
9.9.9.9 / 149.112.112.112
CenturyLink** (Level3)**
205.171.3.65 / 205.171.2.65
Watch DNS
84.200.69.80 / 84.200.70.40
Comodo DNS
8.26.56.26 / 8.20.247.20
Yandex DNS
77.88.8.8 / 77.88.8.1
Control D
76.76.2.0 / 76.76.10.0
CleanBrowsing
185.228.168.9 / 185.228.169.9
Alternate DNS
76.76.19.19 / 76.223.122.150
OpenNIC
138.197.140.189 / 168.235.111.72
Dyn
216.146.35.35 / 216.146.36.36
Hurricane Electric
74.82.42.42
Why use different DNS servers?
One reason you might want to change the DNS servers assigned by your provider is that you suspect there is a problem with the ones you are currently using. The simplest way to check for a DNS server issue is to enter the IP address of a website into your browser. If you can get to the website with the IP address but not the name, then the DNS server is likely having problems.
Another reason to change DNS servers is if you are looking for a more performing service. Many people complain that the DNS servers provided by their internet providers are slow and hamper overall operation. If your existing DNS servers really are bad, you might find you can double your internet speed just by changing these servers.
Other common reasons for using third-party DNS servers are to prevent logging of your web activity for more private browsing and to bypass blocking of certain websites.
However, keep in mind that not all DNS servers do not log traffic. If you're interested in this, be sure to read the FAQ section on the DNS provider's website to make sure it will do (or not do) what you need.