"The registration was not able to be completed"

[uncut bramble]

We're sorry, something went wrong with that.
The registration was not able to be completed. The domain you are attempting to register has been blocked for security reasons.

id much appreciate it if a admin could reach out to provide some assistance

[remote lichen]

what domain were you trying to register? it probably is invalid, in a list or some other issue

[uncut bramble]

where could i find a list of blocked domains?

[remote lichen]

open a resgistrar ticket and ask them for why