I have four nameservers registered for a domain:
ns1.primary-nameserver.net ns2.primary-nameserver.net a.ns.secondary-nameserver.net b.ns.secondary-nameserver.net
How can I find out how much usage each nameserver is getting? Or is it safe to assume that it's 25% to each?
I don't control the nameservers, they are provided by third party suppliers like DNS Made Easy, Zerigo, Route 53, etc. I am trying to establish whether all listed nameservers are used equally.