How to Install Tumblr to a Subdomain


Among Tumblr's customization options for your blog, one of which being the ability for your visitors to access it using a custom domain or subdomain instead of the standard address. Setting up a new subdomain and associating it with your Tumblr blog requires you to add a new canonical name record to your domain name's domain name server records and to edit your Tumblr settings.

When visitors type in your blog's old URL, Tumblr automatically redirects them to the chosen subdomain.
(Image courtesy of Tumblr)
Step 1

Log in to your account for your DNS provider. Open the domain name servers management page and add a new DNS record. Select CNAME as the record type, enter the subdomain you wish to use in the Host field and in the Answers field. Save your new settings.

For some providers, you may have to use a Value record or something similar instead of Answers.

Your registrar's DNS records editor may differ from the one pictured in this illustration.
Image courtesy of
Step 2

Log in to your Tumblr account and click the Account icon to open a new menu. Select **Settings."

Clicking on "Settings" opens a new page containing various blog customization options.
Image courtesy of Tumblr
Step 3

Select the appropriate blog.

Tumblr displays a star next to the name of the blog you created when you registered an account.
Image courtesy of Tumblr
Step 4

Click the Pencil icon to reveal the Use a Custom Domain option.

Image courtesy of Tumblr
Step 5

Select Use a Custom Domain and enter your custom URL -- including the subdomain -- in the text field.

The address field only becomes visible after clicking on "Use a Custom Domain."
Image courtesy of Tumblr
Step 6

Click the Test Domain link to test your new settings and, if Tumblr validates your new URL settings, click Save to finish the process.

The "Save" button only becomes active after you have successfully validated your new settings.
Image courtesy of Tumblr

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Tips & Warnings

  • If Tumblr is unable to successfully validate your new settings, its Test Domain tool identifies the errors. Fix all listed problems either by editing your Tumblr or your DNS records settings and select "Test Domain" again.
  • It may take up to 72 hours after editing your domain name settings for DNS servers around the world to update their records. During that time, some visitors may be unable to visit your blog by typing its new URL address.
  • Your registrar's DNS records editor may use terms other than "Host" or "Answers" when referring to the various values you can edit. Refer to your registrar's online documentation or contact its support team if you experience difficulties while creating a new DNS record.
  • Selecting the wrong DNS record type or entering incorrect values can prevent visitors from being able to access your entire website. Contact your registrar before editing your domain name's DNS records if you are unsure how to create a valid CNAME DNS record.


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