How long time take a domain registration on DH?

How long time take the free domain registration offer in Crazy Domain Insane plan?

I choose my domain that Dreamhost offer to me for free and I pay the one year pre-payment plan, but I can see that this domain still available in Whois from

In my control panel, in Domain link appear in “Manage”:

Service type: Domain Registration
On plan: My Crazy Domain Insane
Status: unknown
Reconfigured (PST): N/A
Server: (empty)
Modify: (empty)