Yes. It is possible to assign one dedicated IP address to multiple cPanel accounts in WHM Panel. You do not have to update each account individually. You can change the IP address for multiple sites or accounts at once.
Below are the steps on how to assign a dedicated IP address to multiple cPanel accounts in WHM Panel.
Step 1: Log in to WHM Panel.
Step 2: Type Multi Account Functions in the Search box on the screen's upper left side.
Step 3: After then, click on the Change Multiple Sites IP addresses option.
Step 4: In the Change Multiple Sites' IP addresses window, select the box beside the domain to change the IP address. Here, we have selected the domains nicktest.com and craigtext.com as an example.
Step 5: Click on the Change IPs of Selected Accounts button to assign a dedicated IP address.
Step 6: Once you click on it, the selected account details will appear. Select a new IP address for each domain account from the drop-down list of the New address.
Step 7: After then, click on the Change IPs button to change it.
Note: If you change your website's IP address, it may be down from some locations until DNS changes propagate worldwide.
Step 8: By clicking on it, the IP address of the domain will be changed, and you will get a successful message on the screen that the Account has been modified. The new IP address is ..... All IP changes complete.
Important Note: Changing IP addresses for multiple accounts can take some time as the system applies the changes and adjusts settings at various levels. This includes updating the DNS zone, configuring Apache based on the new IP, and DNS propagation.
That's all.