Training
Module
Add a custom domain in Microsoft 365 - Training
This module provides instruction on how to add a custom domain to your Microsoft 365 deployment. It also examines the DNS requirements that are necessary to support a new domain.
Note
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Access to this page requires authorization. You can try changing directories.
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Check the Domains FAQ if you don't find what you're looking for.
Note
Only domains ending in .COM, .NET, and .EDU work with this tool.
On the InterNIC search page, in the Lookup field, type your domain. For example, contoso.com.
Select Lookup.
Locate the Registrar Information entry. This entry lists the organization that provides registrar service for your domain.
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