You all know about Tumblr blog platform for casual bloggers, and they have a cool option to use our own domain on your tumblog. This feature will make your blog professional and you don’t have to use your-name.tumblr.com.
To get started, you have to own a domain name. If you don’t have one, then check this guide on how to choose domain names for blog. Now after you have the domain, se your tumblr domain; you can set the main domain or a sub domain for your tumblog. For an example, you can use yourname.com or sub.yourname.com -either way you have to change the DNS of your domain.
Create an A record for your domain or ask your support team to do that for you and set the value: 188.8.131.52
Now after you’ve done that, now you can test your domain here,
Now do to your dashboard > Customize and click “Info” tab and select your custom domain and click “Save changes“
Now after you changed the domain, your domain may not point to your blog immediately. Usually it takes a couple of hours and up to 48 hours to set up correctly.