List Registered NameServers

List the Registered NameServers associated with a domain.

Sample Request Response
<namesilo>
	<request>
		<operation>listRegisteredNameServers</operation>
		<ip>55.555.55.55</ip>
	</request>
	<reply>
		<code>300</code>
		<detail>success</detail>
		<hosts>
			<host>ns1</host>
			<ip>123.456.78.9</ip>
			<ip>11.22.33.44</ip>
		</hosts>
		<hosts>
			<host>ns2</host>
			<ip>99.88.77.6</ip>
		</hosts>
	</reply>
</namesilo>