Can registrations on kbin.social be disabled to stop spammers

kbin.social is being overrun with spammers. Can we disable registrations on this instance so they can't keep creating new accounts? Every day I log on, I have to spend the first 20-30 minutes, reporting and blocking a bunch of new accounts.

Here are some that were just created today:
https://kbin.social/u/dfgdfgfdfgfdh
https://kbin.social/u/nyfejevy
https://kbin.social/u/vepotal774
https://kbin.social/u/ayman01
https://kbin.social/u/MariaesNichols
https://kbin.social/u/nidhiroute
https://kbin.social/u/dcesdff
https://kbin.social/u/mauntehilss
https://kbin.social/u/nidhirout
https://kbin.social/u/noraharris0