You can find a list of US aggregators at https://www.usshortcodes.com/partners/find-partner https://www.usshortcodes.com/partners/find-partner; though it doesn'

You can find a list of US aggregators at https://www.usshortcodes.com/partners/find-partner https://www.usshortcodes.com/partners/find-partner; though it doesn't appear to be up to date with the latest acquisitions. On top of the ones the parent mentioned, mGage was acquired by Kaleyra that I know of.