How do i fix this

[rotty100]

Have 1 domein
2 server
Just want that my domein stay on server 1
But i will that SUB.domein.com turn and stay on server 2
i do this on
Server 1

sub.domein.com. A 84.243.253.***
ftp A 194.126.174.**
domein.coml. A 194.126.174.**
localhost A 127.0.0.1
mail A 194.126.174.**
pop A 194.126.174.**
domein.coml. NS ns1.domeinnaam.com.
kdomein.com. NS ns2.domeinnaam.com.
mail MX 10

On Server 2

sub.domein.com. A 84.243.253.***
ftp A 84.243.253.***
localhost A 127.0.0.1
mail A 84.243.253.***
pop A 84.243.253.***
www A 84.243.253.***
sub.domein.com. NS ns1.dodomein.info.
sub.domein.com. NS ns2.dodomein.info.

What do i wrong..?
Or is't a easy way. ?
Who's can help me .?