Find out "Mask phone number in the participant list" setting

GET /users/{userId}/settings

I cannot spot the setting “Mask phone number in the participant list” here. It’s on the Telephony settings tab of a user’s profile page.

Is this available to retrieve on the API, either on this endpoint or somewhere else? It’d be really useful to be able to respond to a webhook using phone numbers but it will only work if they are unmasked. I’d like to be able to test this setting and only process if phone numbers are unmasked.