RW might run out within 2 weeks...hopefully....bcoz I am planning to get a RX
Also quite surprise that FC is yet to open

From what I tried previously, any number of PNM (1-9999) can be purchased once it becomes available at JPJ or MySikap.
below are the number available when i search between 9950 and 9999.

currently PNM is out till 3200++
you need to monitoring how many numbers out per day.
let's say 200 numbers per day, then you could guess when PNM series will be running out.
PNN most likely available 3-5 days before PNM series running out.
anyway, no harm to try everday if you have mysikap

RX series is out

I received different ideas for this
Some said go to jpj personally, some said have to write validity extension letter to respective jpj (my number is perlis state).
Then I found a runner who say he could help on this and the fee is 210+100 (I purchase the number via mysikap with rm 210)
I decided to use his service in this middle of sep as the number is due on oct 2. Then I will update the outcome here later