How to get a SMS enabled 7 prefix number in France

I would like to sign up for a France number, but I need a prefix that will receive SMS. I see from your post about which numbers will receive SMS that a 7 prefix will work, but when I try to sign up I only see geographical prefixes in the list of choices. I could choose Paris where I am located, but would that only give me a 1 prefix? How can I get a 7 prefix?

Unfortunately they’re out of stock, apologies as we should’ve had the SMS page updated with that.

Will look a little further into Mobile France numbers and update accordingly.