[Samba] Provisioning new AD Domain Controller

[Mark Foley]

The wiki https://wiki.samba.org/index.php/Setting_up_Samba_as_an_Active_Directory_Domain_Controller#Create_a_reverse_zone
says, "For a DC with the FQDN of dc1.samdom.example.com and the
ipaddress of 10.99.0.1, to add a record to the 0.99.10.in-addr.arpa ..."

Is this correct or should the rDNS PTR be 1.99.10.in-addr.arpa? 

I just want to make sure this isn't a typeo.

Thanks --Mark