only first strings are shown when using sAjaxSource and custom JSON

Hello.
I'm using custom JSON as Ajax source and the problem is that only first string from each row is printed into the table.

Screenshot of the final rendered table: https://www.dropbox.com/s/d4zhklk1p14fphf/Screenshot 2014-01-10 13.39.33.png
Sorry for the screenshot, my web is in localnet without access from the outside.

Can someone tell my what is wrong? Thank you in advance.

My JSON:

{
   "Sortlist" : null,
   "Comments" : null,
   "Options" : null,
   "Nameservers" : [
      "192.168.4.254",
      "62.168.96.4",
      "8.8.8.8"
   ],
   "Domain" : null,
   "Searchlist" : [
      "in.example.com"
   ]
}

And table code and initialization sequence:

<table id="table-dnsdata" class="table table-bordered table-striped table-hover dataTable">
	<thead>
		<tr>
			<th >Nameservers</th>
		</tr>
	</thead>
	<tbody>
	</tbody>
</table>

$('#table-dnsdata').dataTable(		{
   "sAjaxSource" : "dns_data.json",
   "sAjaxDataProp" : "Nameservers",
   "oLanguage" : {
      "sUrl" : "/assets/js/dataTables-en.UTF-8.txt"
   }