https://community.d2l.com/brightspace/kb/articles/4196-using-a-custom-url-to-access-brightspace
Using a Custom URL to access Brightspace - Brightspace
Feb 6, 2025 - You can configure a custom URL, such as d2l.example.com, to access your Brightspace. One custom URL (the primary URL) is supported for site access and...
a customaccess brightspaceusingurl