designing the DNS from the scratch

John W. Blue at
Sun Jul 9 17:58:58 UTC 2017


Honestly, I think that a design spec of getting DNS responses in 3ms across the board is unrealistic.  My initial MX query for took 367ms:

;; ADDITIONAL SECTION:         14400   IN      A        21600   IN      A        21600   IN      A

;; Query time: 367 msec
;; WHEN: Sun Jul  9 12:50:58 2017
;; MSG SIZE  rcvd: 144

Additionally, given the operational environment in which you exist I would recommend that you strive for just providing good DNS services in general.

Good luck.


From: bind-users [mailto:bind-users-bounces at] On Behalf Of Abdulhadi Ettwejiri
Sent: Sunday, July 09, 2017 2:32 AM
To: bind-users at
Subject: designing the DNS from the scratch


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,

1-    To achieve the goal of my customer about the response time I need to know what's the optimal design solution for DNS ( Authoritative or Recursive(,or there is other design.

2-      If the answer in the previous question an "authoritative", is there any registration & technical requirements for so (i.e. ccTLD, ...   )

Best regards

Abdulhadi Ettwejiri
Technical Support Department
[Description: LITC-Logo03]
Zawia Street inside GPTC building      | Tripoli | Libya |
*  + 218 91 9994265                    * Abdulhadi.ettwejiri at<mailto:Abdulhadi.ettwejiri at>
* + 218 21 3600234                     *<>
7 + 218 21 3617777

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