This is the documentation page for an unsupported version of Zabbix. Is this not what you were looking for? Switch to the current version or choose one from the drop-down menu.
Native support for the itemsnet.dns and net.dns.record has been added to Zabbix agent 2. On Zabbix agent 2 for Windows, these items now allow custom DNS IP addresses in the ip parameter and no longer ignore timeout and count parameters.