How to setup custom-domain?

To setup custom domain you will need to enter your preferred custom domain (sub-domain) and make DNS changes so that your sub-domain will be pointed to Dashlytics.

Change to be made:

Consider you have set up custom domain to be reports.example.com

Then at your DNS settings, you need to point CNAME of your SUB-DOMAIN towards -- app.dashlytics.io

Below is a screen shot from Go-daddy and Bluehost /Cpanel.

Bluehost

GoDaddy