www only redirects to root instead of actual page

Hey All,

I recently migrated a WP to multisite and I realized about a week after the migration that when any url is entered with http://www., it always redirects to the root, eg:

http://www.domain.com/whatever -> domain.com

I haven’t made any changes to the core settings or htaccess file but I can’t find the reason why this is happening. It also happens on all pages on the site when entered with www.

Alsn of note, perhaps, is that domain.com/whatever works fine

I’ve spent a bit of time trying to find a similar issue on the forms and google and various places with no luck. any help greatly appreciated!