- This specialized(تخصصی) caching server also forwards queries to the other servers if it cannot find the needed query answer in its cache; it is often implemented(اجرا می شود) for security reasons and can also be implemented(اجرا می شود) on the DNS client side to improve name resolution performance.
- نوعی DNS سرور می باشد که درخواست های DNS را به یک DNS سرور دیگر پاس می دهد.