Domain Name System (DNS) servers map domain names to Internet Protocol (IP) addresses. When used in conjunction with search domains, they allow you to go quickly to websites and servers you visit frequently without typing the complete address.
Your home router is likely set by default to use your ISP's DNS servers, which may or may not be very reliable. There are a number of third-party DNS servers available as well.
What you need before you start:
Your computer should be connected to the Internet. (wired or wireless)
2. Configure DNS
Start by using your Windows 10 Search to bring up Control Panel.
Click on Network and Sharing. Depending on your settings you may need to click on Network and Internet first.
On the left side, click Change Adapter Settings.
Right click your connection to the internet and select Properties.
Select Internet Protocol Version 4 (TCP/IPv4) from the list and click Properties.
Check Use the following DNS addresses button.
Type your preferred and alternate DNS service addresses in the spaces. Here are a handful of public address you can use.
Google Primary8.8.8.8Secondary8.8.4.4
Dyn Primary216.146.35.35Secondary216.146.36.36
OpenDNS Home Primary208.67.222.222Secondary208.67.220.220