Are accounts in Web Server 01 using nameservers NS1-DC1, NS2-DC2, NS3-DC1 & NS4-DC2
and
accounts in Web Server 02 using nameservers NS1-DC2, NS2-DC1, NS3-DC2 & NS4-DC1 ?
If yes, why are the nameservers serving different web servers syncing each others?
Or am I missing something?