While changing your DNS server won't usually directly increase your network speed, choosing the right DNS server can improve domain name resolution speed and, in some cases, overall network performance. This is because fast and efficient DNS resolution can reduce the latency of requests. Here are some commonly used public DNS servers that you can try to speed up your domain name resolution:
google public dns：
Primary DNS server: 88.8.8
Alternate DNS server: 88.4.4
cloudflare dns：
Primary DNS server: 11.1.1
Alternate DNS server: 10.0.1
opendns：
Primary DNS server: 20867.222.222
Alternate DNS server: 20867.220.220
quad9 dns：
Primary DNS server: 99.9.9
Alternate DNS server: 149112.112.112
Before you change your DNS server, make sure you understand how the operating system or router you're using is set up. Here are the steps to change your DNS server in general:
Open Network Settings: On your computer or mobile device, go to the Network Settings page.
Locate the network connection settings: Depending on your operating system, it may be called"Network settings"、"Wi-Fi settings"or"Network and Internet"。
Change DNS server: Find the DNS settings option and change the nameserver address to the DNS server address of your choice.
Save your changes and restart your device: Save your changes and restart your computer or mobile device for the new DNS settings to take effect.
Note that network speed is affected by several factors, including network provider bandwidth, device performance, network congestion, and more. Changing your DNS servers may bring some improvements, but it's not a one-size-fits-all solution to all network speed issues. If you experience persistent network speed issues, it is recommended that you contact your network service provider for further support and advice.