Open SSH and type the following and press Enter:

/sbin/ifconfig | grep -i hwaddr

The sequence of hexadecimal digits that appears to the right of eth0 HWAddr (e.g. 08:00:27:ED:DA:8b) is your network card's MAC Address

Sometime accounts are to big to transfer via the WHM transfer feature.

Below you can find some steps to do so manually 

If you have issues with cPanel running CentOS5 with BIND then the easiest way is to downgrade BIND to 9.2.4

The reason you're having trouble is because CentOS 5 uses bind-9.3 and CentOS 4 uses bind-9.2 - The changes between these versions is significant enough that cPanel won't work with it properly.

For instance by default there is no /etc/named.conf file created when bind-9.3 is installed and the default named.conf file for bind-9.3 is significantly different than in older versions.

Until the code is updated to work with bind-9.3, I have found the workaround to be to remove bind-9.3 packages and install bind-9.2 packages as follows: