Are these nameservers configured properly?

Solution 1:

From looking at the whois record for skv.com, we can see that only one of the three listed nameservers has a glue record:

   NS1.PRIMUSCOMPUTING.COM      
   NS2.PRIMUSNETWORKS.COM       
   NS3.PRIMUSNETWORKS.COM       66.162.216.152

We can also see that the one that does have a glue record doesn't match what's in the DNS for that hostname.

$ host NS3.PRIMUSNETWORKS.COM
NS3.PRIMUSNETWORKS.COM has address 208.80.126.4

So, the domain having been registered via Network Solutions, the place where this needs to be fixed is at Network Solutions, by the owner of skv.com.