cPanelMichael

Technical Support Community Manager
Staff member
Apr 11, 2011
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DataCenter Provider
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Hello :)

There were a couple of internal cases in the past where adding IPv6 ranges failed. However, that should no longer be an issue if you are using the latest version of cPanel for your build tier.

Could you open a support ticket using the link in my signature so we can take a closer look at this issue? You can post the ticket number here so we can update this thread with the outcome.

Thank you.