They only publish numbers above 1000, but they still come up with a number before deciding to not publish it. https://www.fide.com/docs/regulations/FIDE%20Rating%20Regula...

Not all clubs follow those rules exactly, but you still need to track sub 1000 to know when people cross it.

See 7.1.2. Ratings aren't tracked by clubs even when players are under this cutoff - all games for rating are submitted to FIDE.

So everyone now has rating above 1400, except if their rating fell under in meantime, in which case they will be removed from next rating list.