designing the DNS from the scratch

[SM]

Hi Abdulhadi,
At 00:31 09-07-2017, Abdulhadi Ettwejiri wrote:
>we are ISP company , we are providing Internet to our customer, 
>Recently one of our VIP customer ask for DNS service, and need the 
>response time 3msec, we don't have enough knowledge of DNS,

I suggest discussing with your customer about the requirement as it 
is not clear what they are looking for.

Regards,
-sm