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Locate your domain services or buy a new domain

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To add a domain name to Microsoft Office 365 for professionals and small businesses, you, as an administrator, must own a domain and change some of the DNS records for your domain. If you don’t already own a domain name, you can buy one from a domain name registrar.

Your domain name registrar usually, but not always, manages the DNS records for your domain. If your registrar doesn’t manage your DNS records, you’ll need to locate your DNS hosting provider. If you don’t recall the domain name registrar where you registered your domain, follow the steps provided here to locate the correct registrar.

What do you want to do?

  • Locate your domain name registrar

  • Locate your DNS hosting provider

  • Learn how to buy a domain name

Locate your domain name registrar

  1. Open a browser, and then go to the InterNIC search page.

  2. In the Whois Search box, type your domain name; for example, contoso.com.

  3. Select the Domain option, and then click Submit.

  4. On the Whois Search Results page, locate the Registrar entry. This entry lists the name of the organization that provides registrar service for the domain name that you entered.

Locate your DNS hosting provider

  1. Open a browser, and then go to the InterNIC search page.

  2. In the Whois Search box, type your domain name; for example, contoso.com.

  3. Select the Domain option, and then click Submit.

  4. On the Whois Search Results page, locate the first Name Server entry.

  5. Copy the name server information that appears after the colon (:), and then paste it into the Search box at the top of the page. Select Nameserver, and then click Submit.

  6. On the Whois Search Results page, locate the Registrar entry. This entry lists the DNS hosting provider who owns the name server.

Buy a domain name

When you sign up for Office 365, you are issued a domain name that you can use with the service, for example, contoso.onmicrosoft.com. But you can also use your own domain name with Office 365 to personalize your email addresses and instant messaging addresses, or to host a website. If you don’t already have your own domain name, you can easily purchase one online at a domain name registrar, domain reseller, or even at your current Internet provider.

The following are some common domain registrars:

After you register your domain name, you can sign in to Office 365 and add the domain name to Office 365.

See Also

DNS basics
Work with domain names and DNS records in Office 365
Verify your domain and change name servers