Mastering DNS Troubleshooting - How to Fix Network Connectivity Issues with Ease

If you have issues connecting to the internet, it could be because of a problem with the Domain Name System (DNS). DNS helps your computer find websites by their names, like www.illumy.com.

When DNS is not working or set up wrong, you may not be able to visit some websites or have a slow internet connection.

If you have connectivity problems, there are some things you can try. Check your computer’s DNS settings. Try a different DNS server. Clear your DNS cache. Restart your router and modem. Contact your internet provider or DNS provider. Then, you can enjoy browsing the internet with ease.

#### steps to troubleshoot DNS:

1. Check your computer’s DNS settings.

    1. On a Windows computer, go to Control Panel > Network and Internet > Network and Sharing Center > Change adapter settings. Right-click on your network connection and click Properties. In the Properties window, double-click on Internet Protocol Version 4 (TCP/IPv4) and make sure that “Obtain DNS server address automatically” is checked.

    2. On a Mac, go to System Preferences > Network. Click on your network connection and click on the Advanced button. Click on the DNS tab and look at the listed DNS servers.

2. Try a Different DNS Server. Use a different DNS server. Google Public DNS and OpenDNS are two good options.

    1. To use Google Public DNS, change your DNS settings to 8.8.8.8 and 8.8.4.4.

    2. To use OpenDNS, change your DNS settings to 208.67.222.222 and 208.67.220.220.

3. Clear DNS Cache. After changing your DNS settings, you may need to clear your DNS cache to use the new settings.

    1. On a Windows computer, open the Command Prompt and type “ipconfig /flushdns” and press Enter.

    2. On a Mac, open the Terminal and type “sudo dscacheutil -flushcache” and press Enter.

4. Restart Your Router and Modem. If you are still having problems, try turning off and on your router and modem. Unplug both devices from the power source and wait for at least 30 seconds before plugging them back in.

6. Contact your internet provider or DNS provider. If you’ve tried everything else and still can’t fix your DNS problems, contact your internet provider or DNS provider. They may have network problems and can help you more.

8. Consider using public DNS servers. If nothing else works, consider using a public DNS server, like Google DNS or OpenDNS. These servers are free and often provide a faster and more reliable connection than your internet provider’s DNS servers.

By following these troubleshooting steps, you can help to find and fix network connectivity problems caused by wrong or broken DNS settings. If none of these steps fix your network connectivity problems, contact your internet provider for more help.

#### some commonly used public-facing DNS servers

1. Google Public DNS: 8.8.8.8 and 8.8.4.4

2. OpenDNS: 208.67.222.222 and 208.67.220.220

3. Cloudflare DNS: 1.1.1.1 and 1.0.0.1

4. Level 3 DNS: 209.244.0.3 and 209.244.0.53

5. Verisign DNS: 64 6 64 6 and 64 6 65 6

Please note: These public DNS servers can be different in speed and reliability Test how well they work for you by trying different servers to see which one is best for you.