Anyone verified their FinCEN MSB registration number lately?

I see in their TOS here:

10. BSA / FinCEN
Poloniex is registered with FinCEN as an MSB (Money Services Business), registration number 31000055869515. Poloniex may be required to file details of account activity to this organization from time to time.

Then you go make a search here:

https://www.fincen.gov/msb-registrant-search

Interesting their registration number does not yield any results. What is up with that?