Problem with dns/name server

[lukas1234]

For some reason,i added wrong ip adress during installation and setuping name server for ns2 of domain.So i changed now to proper ip adress,which is number next after ip adress of ns1.
But even i changed ip adress of ns2 on domain register,and then i added it on network setup/hostnames,it seems dns server of server is still screwed.I see that by checking server over dnschecker,and also when i go to add an a entry in basic cpanel/whm setup i see this:
Found your nameserver to be: ns2.domain.com
Found your domain name to be: domain.com
Found your nameserver name to be: ns2
Found your nameserver ip to be: 66.249.137.21
If this looks correct,
Add an a entry
As you can see,it shows old ip adress which is wrong instead proper server adress which should be.How do i fix that?

[lukas1234]

No solution for this problem?