To configure your device to use dDNS, it's worth saying that you will still be able to access any domain names from Web 1.0 and Web 2.0. The only plus, is that you can also access domains and decentralized dSites, dApps and other entities from Web 3.0 and all of our dTLDs.
Go to the Apple menu and select “System Preferences”
Choose the “Network” control panel, select your network interface from the left side (“Wi-Fi” or “Ethernet” for example), then click the “Advanced” button in the lower right corner of the Network window
Choose the “DNS” tab at the top of the screen. To add a new DNS server: click on the [+] plus button. To edit an existing DNS server: click twice on the DNS IP address you wish to change and to remove a DNS server: select a DNS server IP address and then click either the [-] minus button or hit the delete key
Click on the [+] plus button and add the IPV4 address 18.104.22.168
Click on the [+] plus button and add the IPV4 address 22.214.171.124
Click on the [+] plus button and add the IPV4 address 126.96.36.199
When finished making changes to the DNS settings, click on the “OK” button.
Now click on “Apply” for the DNS changes to take effect, close out of System Preferences as usual.
Open Control Panel and then click on Network and Internet and then click on Network and Sharing Center and lastly, on the left pane, click on Change adapter settings.
Right-click the network interface connected to the internet, and select Properties.
Select Internet Protocol Version 4 (TCP/IPv4) from the list and click the Properties button.
Click the Use the following DNS server addresses option.
Type the following IPV4 addresses 188.8.131.52, 184.108.40.206 and 220.127.116.11
Click Close to apply the new DNS settings to the adapter.
Using a terminal, open the resolv.conf file with an editor, such as nano, to make the necessary changes.
Add lines for the name servers that you want to use. The following table displays which name server IP addresses to use depending on which datacenter houses your cloud servers. Add the following to the file, while removing the current addresses from the file beforehand:
Ctrl+X to exit the file and Ctrl + S to save it.
From the IOS device's home screen, tap Settings
Tap Wi-Fi. The available wireless networks in range of your IOS device appear.
Find your wireless network in the list, and then click the [i] symbol as shown below.
The screen shown below appears. Tap the DNS field.
The remove the current ip addresses and replace with 18.104.22.168, 22.214.171.124 and 126.96.36.199.
Exit this menu. Your settings are automatically saved.
Go to “Settings” and select "WiFi". Press and hold your network until dialog pops up.
Press on “Modify network config.”
Check “Show advanced options” and then Select “Static” (8) for “IP settings”.
In the “DNS 1” and “DNS 2” fields (9) enter the following DNS addresses: 188.8.131.52 and 184.108.40.206
Press “Save” and restart your Android-powered device.